Air Force Modernizes Physical Fitness Readiness Program: New PFRA Standards, Scoring Charts and Support Launch for 2026

Air Force Modernizes Physical Fitness Readiness Program: New PFRA Standards, Scoring Charts and Support Launch for 2026

Table of Contents

  1. Key Highlights
  2. Introduction
  3. What changed: standards, scoring charts, and occupational specificity
  4. Transition timeline and the baseline diagnostic window
  5. Body composition returns: procedures, timing, and workforce effects
  6. Occupationally Specific Assessments: AFSPECWAR, EOD, and mission-tailored fitness
  7. Resources and support: Master Fitness Leaders, playbooks, and tailored guidance
  8. PFRA and personnel programs: integration with civilian-evaluation frameworks
  9. Track certification and measurement uniformity
  10. Preparing Airmen: training, nutrition, recovery, and planning
  11. Real-world examples: how the change plays out at unit and individual levels
  12. Anticipated operational and personnel impacts
  13. What commanders and leaders need to do now
  14. Comparisons with other service fitness reforms
  15. Measuring success: metrics the Air Force should track
  16. Potential criticisms and realistic responses
  17. Practical checklist for Airmen and units
  18. Implementation risks and mitigation strategies
  19. The broader rationale: aligning fitness with the mission and life
  20. How to follow developments and where to find resources
  21. FAQ

Key Highlights

  • The Air Force released an updated Physical Fitness Readiness Program (PFRP) with higher minimums, occupationally specific scoring charts, and the return of body composition as a scored component. A baseline diagnostic window runs March 1–June 30, 2026, with official scoring beginning July 1, 2026.
  • Implementation includes expanded resources—Master Fitness Leaders, the Warfighter Fitness Playbook 2.0, and a Pregnancy & Postpartum Performance Training Guide—while PFRA results will be integrated into annual evaluations under AFI 36-2406.

Introduction

The Air Force has retooled its fitness program to reflect evolving mission demands and the science of long-term health. The update tightens minimums across scored components, introduces separate assessments for high-demand occupations, and restores body composition as a graded element. Leaders framed the changes as investments in warfighter readiness and career-long performance rather than a narrow push for higher test numbers.

Gen. Ken Wilsbach, Air Force Chief of Staff, described the initiative as a way to “help Airmen build fitness habits that will serve them throughout their careers and hopefully a long life.” Chief Master Sgt. of the Air Force David R. Wolfe emphasized the operational thread: standards meant to prepare Airmen “for the demands of today and the future fight.” The rollout includes a phased approach with a diagnostic baseline period, expanded training support on installations, and updated policy guidance tying fitness to personnel evaluations.

The following analysis synthesizes the directive changes, explains what Airmen and commanders must do during the transition, explores operational and personnel implications, and lays out practical steps units can take to adapt effectively.

What changed: standards, scoring charts, and occupational specificity

The heart of the update lies in the directive’s recalibration of what the Air Force measures and how it scores performance. Scoring charts have been revised with increased minimum thresholds for each scored component of the Physical Fitness Readiness Assessment (PFRA). Separate charts are now provided for Occupationally Specific Physical Fitness Assessments, with explicit references to AFSPECWAR and EOD charts.

Why this matters

Raising minimums shifts the baseline of acceptable physical readiness. Higher thresholds are intended to ensure Airmen possess the stamina, strength, and body composition necessary for sustained operations and survivability in contested environments. Separate occupational charts acknowledge that certain mission sets—special operations, explosive ordnance disposal and similar high-demand roles—require different capabilities than administrative or garrison tasks.

How the charts will be used

The updated charts determine pass/fail minimums and contribute to total PFRA scoring. The directive allows Airmen to view diagnostic results during the baseline window and choose to record those results as an official fitness score. The existence of occupationally specific assessments means commanders will need to ensure members in designated specialties are tested against the right chart and that training prepares them for the unique demands reflected by those standards.

Implications for measurement equity

Standardization of test conditions and scoring remains central to fairness. The Air Force has stated it will certify 2-mile run tracks to ensure measurement consistency. Final guidance on measurement units—meters, feet, yards—will be included in AFMAN 36-2905. Until those specifications are published, testing authorities must pay close attention to local measurement practices to avoid invalid results or disputes.

Transition timeline and the baseline diagnostic window

A deliberate timeline smooths the move from old to new standards. Diagnostic testing begins March 1, 2026, and runs through June 30, 2026. Official scoring against the updated standards starts July 1, 2026.

Purpose of the baseline period

The baseline window serves three purposes:

  • Allow Airmen to assess current fitness against the new charts and alter training accordingly.
  • Provide data to the service to evaluate whether new thresholds are appropriate and equitable across demographics and geographies.
  • Offer an option for Airmen to elect to use a baseline diagnostic score as their official PFRA test result, a flexibility useful for those in cold-weather locations or other conditions that make outdoor testing difficult during certain seasons.

Practical examples

An Airman stationed in Alaska can take the diagnostic test during the baseline period and elect to have that score set as her official result, thereby aligning her next due date with milder weather. A unit at an installation still adjusting to track certification might use the baseline window to validate new measurement protocols before official scores count.

What commanders must do now

Commanders must communicate testing opportunities, ensure access to diagnostic sessions, and encourage use of available resources. They should track who completes diagnostic testing, note any elect-to-record decisions, and coordinate with installation fitness personnel to guarantee standardized test administration.

Body composition returns: procedures, timing, and workforce effects

Body composition will again be a scored PFRA component. Airmen may take the body composition assessment up to five duty days before completing other PFRA elements.

Operational mechanics

The reintroduction of body composition as a graded component changes how Airmen plan their testing timeline. Allowing the body composition test to be administered up to five duty days before other components offers scheduling flexibility and reduces testing-day congestion. Scores from the body composition evaluation will be combined with other PFRA component scores to produce the overall result.

Why body composition matters for readiness

Body composition correlates with injury risk, endurance, and resilience to sustained physical demands. A higher body-fat percentage has been linked with decreased aerobic performance and longer recovery times after exertion. For roles requiring heavy gear, long patrols, or casualty extraction, lean mass and aerobic capacity directly influence mission success.

Potential concerns and mitigation

Reintroducing body composition may generate concern among some Airmen about fairness and measurement accuracy. To address this, the Air Force will rely on standardized measurement protocols and training for testers. Leaders and fitness professionals should emphasize progressive conditioning, monitored nutrition strategies, and sustained behavior change rather than last-minute measures that create health risk.

Occupationally Specific Assessments: AFSPECWAR, EOD, and mission-tailored fitness

The policy recognizes that not all Airmen face the same physical demands. Occupationally specific PFRA charts have been published for certain units, with the directive highlighting AFSPECWAR and EOD.

Why occupational specificity is necessary

Tasks such as long-range patrols, carrying heavy loads, casualty movement, and operating under chemical or environmental stress require different physiological capacities than administrative work. Occupationally specific assessments create a realistic standard set for mission-essential performance, ensuring those in high-demand specialties train toward job-relevant fitness outcomes.

How these charts differ

While the directive’s public summaries do not enumerate exact test items for each occupational chart, historical practice suggests occupationally specific assessments may emphasize weighted carries, loaded movement, anaerobic power, and tasks simulating mission actions. Units subject to occupational charts should receive clear guidance on test components, scoring weightings, and acceptable training approaches.

Unit-level responsibilities

Units with occupationally specific standards must coordinate with installation testing teams to schedule appropriate test events and ensure testing personnel are certified to administer those assessments. Peer Fitness Leaders and Master Fitness Leaders should develop training cycles that replicate occupational demands rather than relying solely on standard run-and-sit-up protocols.

Resources and support: Master Fitness Leaders, playbooks, and tailored guidance

The program’s effectiveness depends on education and applied support. The Air Force is deploying a range of resources designed to make the transition sustainable at the unit level.

Master Fitness Leaders

Master Fitness Leaders (MFLs) are trained professionals who support Peer Fitness Leaders and command fitness initiatives. Their role includes teaching safe conditioning, managing reconditioning after injury, and designing adaptive fitness programs for diverse populations. MFLs will be a key on-installation resource during the baseline period and beyond.

The Warfighter Fitness Playbook 2.0

The playbook delivers science-based programming on workouts, recovery, sleep, and nutrition. It presents integrated approaches: periodization for strength and endurance, active recovery strategies to lower injury risk, and sleep routines that sustain performance. The playbook’s value lies in translating physiological principles into daily routines commanders can adopt for entire units.

Pregnancy & Postpartum Performance Training Guide

Recognition of the lifecycle of Airmen is central to the update. The Pregnancy & Postpartum Performance Training Guide offers tailored physical training and wellness recommendations during pregnancy and the postpartum period. The guide helps commanders and medical teams provide safe, effective training modifications and reconditioning pathways for Airmen returning to duty.

How installations should deploy resources

Installations should map available support—MFLs, gyms, medical staff, and education materials—so commanders and Airmen can access them easily. Units should schedule group briefings on the new standards and the baseline window, organize diagnostic sessions, and set up individualized follow-up plans for Airmen needing targeted conditioning or rehabilitation.

PFRA and personnel programs: integration with civilian-evaluation frameworks

PFRA scores will be integrated into the annual evaluation process. AFI 36-2406 has been updated to reflect this change, which creates a direct link between physical readiness and formal performance assessments.

Scope of integration

Fitness results will become part of the full picture of an Airman’s performance. This does not reduce the evaluation to a single metric; rather, the PFRA will be one component among others—professional competencies, leadership, and mission accomplishment—that factor into annual reviews.

Potential effects on promotion and retention

Embedding fitness in evaluations may incentivize greater attention to physical conditioning and preventive care. For some Airmen, this may translate into improved readiness and career longevity. Others may perceive the policy as a new pressure point, particularly if life events such as pregnancy, injury, or temporary medical profiles affect scores.

Protections and accommodations

Policy documents emphasize support mechanisms for Airmen with temporary or permanent medical conditions and guidance for pregnancy and postpartum periods. Commanders must follow established medical processes for profiles and exemptions and ensure fitness data used in evaluations is contextualized within each Airman’s circumstances.

Track certification and measurement uniformity

Valid test results require standardized courses and measurement methods. The Air Force is in the process of certifying 2-mile run tracks to ensure consistency across installations.

Why certification matters

Variable track lengths or poorly marked courses can distort run times, affecting scores and fairness. Certification ensures every mile marker, lap, and measurement aligns with AFMAN 36-2905 standards when those are published. Certification also reduces administrative appeals and the need to retest due to measurement disputes.

What to expect from AFMAN 36-2905

The manual will provide final guidance on measurement specifications, acceptable units, and certification procedures. Until then, testing authorities should document local course markers and coordinate with installation civil engineering or range control to verify course accuracy.

Interim actions for testing personnel

Testing officials should inventory existing running surfaces, measure lap lengths, and identify discrepancies. If a course is inconsistent or uncertified, units should either delay official tests until certification or record diagnostic scores during the baseline window. Documentation of test conditions—weather, surface type, and measurement method—will support fairness and data analysis.

Preparing Airmen: training, nutrition, recovery, and planning

Meeting higher minimums requires deliberate, sustainable training plans. The Warfighter Fitness Playbook and MFLs supply evidence-based roadmaps. Commanders should encourage structured approaches emphasizing progression and injury prevention.

Training frameworks that work

A mixed-modal approach yields the most durable gains. Aerobic conditioning, interval training, strength development, and mobility work should be integrated into weekly cycles. Progress should be measured and adjusted based on individual response and duty demands. For example, an Airman aiming to improve a 2-mile run time might combine interval runs (e.g., 400–800 meter repeats), tempo runs for sustained pace, and lower-body strength sessions twice weekly to increase running economy.

Nutrition and body composition

Nutrition plans should support both training and long-term health. Emphasize adequate protein intake for muscle maintenance, balanced carbohydrate timing for training sessions, and controlled calorie deficits when body composition change is desired. Registered dietitians on installation medical teams can design individualized plans and help avoid unhealthy short-term tactics.

Recovery, sleep, and injury prevention

Recovery drives adaptation. Scheduled rest, sleep hygiene, mobility sessions, and active recovery reduce injury risk. Programs should include prehab routines targeting common pain points—hips, knees, and shoulders—and progressive overload to build tissue resilience.

Sample 12-week progression (illustrative)

  • Weeks 1–4: Base building—3 moderate aerobic sessions, 2 strength sessions, 1 mobility/recovery day.
  • Weeks 5–8: Intensity phase—add interval runs and plyometrics; increase load in strength training.
  • Weeks 9–12: Specificity and taper—race-pace repetitions, reduced volume before testing, focus on sleep and nutrition.

Adaptive training for limitations

Rehabilitation and adaptive programs should be available for Airmen with injuries or profiles. MFLs and medical teams can design modified plans that maintain fitness elements without risking re-injury.

Real-world examples: how the change plays out at unit and individual levels

Concrete scenarios help translate policy into practice.

Case A: Special operations candidate A candidate in an AFSPECWAR pipeline faces the occupationally specific chart emphasizing loaded marches and anaerobic power. Her unit schedules occupationally specific diagnostic tests during the baseline window. The testing reveals a shortfall in loaded-carrying performance. With guidance from an MFL, she transitions to a 10-week program emphasizing ruck marches, posterior chain strength, and interval hill sprints. She retests during the official scoring window and meets the occupational standard.

Case B: Cold-weather station adjustment A maintainers’ squadron at a northern base schedules diagnostic PFRA events in late March during the baseline window. Several Airmen elect to record those diagnostic scores as official to avoid summer testing dates that conflict with deployment rotations. Command leadership uses baseline data to identify unit trends: high aerobic capacity but lower body-composition scores. They implement targeted nutrition seminars and group strength sessions focused on lean mass accrual.

Case C: Postpartum reconditioning An Airman returning from maternity leave uses the Pregnancy & Postpartum Performance Training Guide and works with the installation MFL to create a phased return-to-duty program. The program prioritizes pelvic floor rehabilitation, progressive core strengthening, and gradual return to impact activities. The Airman completes the PFRA at a safe timeline and integrates regular follow-ups into her fitness plan.

These scenarios demonstrate how diagnostic flexibility, resources, and tailored training reduce the risk of abrupt failure and promote sustainable fitness improvements.

Anticipated operational and personnel impacts

The directive’s intent is clear: improve readiness and longevity. The practical impacts, however, will vary.

Readiness and mission effectiveness

Airmen closer to operational fitness demands increase unit resilience and lower injury rates during deployments. Improvements in body composition and strength shorten casualty evacuation times and reduce fatigue during prolonged missions.

Retention and recruitment

Perceptions will shape retention and recruitment outcomes. Some may view higher standards as a barrier; others will see a clearer path to career sustainability through improved health and performance. Commanders should communicate support resources and emphasize career-long development rather than punitive enforcement.

Medical workload and injury management

Short-term increases in medical encounters as Airmen pursue higher fitness levels are possible. A sustained focus on preventive strategies—progressive training, nutrition, sleep—should reduce longer-term injury incidence. Medical and fitness staff must coordinate closely to manage return-to-duty timelines.

Administrative burden and enforcement

Implementation necessitates administrative oversight: scheduling, test certification, documentation for evaluations, and tracking of exceptions. Automating parts of the process through MyFSS and central knowledge-base resources will ease the load, but unit-level management remains essential.

What commanders and leaders need to do now

Commanders will determine how smoothly the transition unfolds. Their actions in the next months set the tone.

Immediate priorities

  • Communicate the timeline and availability of the baseline diagnostic window.
  • Ensure test events are scheduled and staffed with trained administrators.
  • Map unit members to the correct scoring charts, particularly those in occupationally specific roles.
  • Connect Airmen to installation MFLs, medical resources, and the Warfighter Fitness Playbook.
  • Document diagnostic test conditions and any elect-to-record choices.

Mid-term actions

  • Integrate fitness goals into unit training calendars with measurable milestones.
  • Monitor PFRA results across the unit to identify training gaps and injury trends.
  • Coordinate with medical teams for reconditioning plans and profile management.
  • Prepare for the integration of PFRA scores into annual evaluations and ensure evaluation write-ups contextualize fitness performance.

Leadership tone and messaging Leaders should frame the changes as enabling: a way to keep Airmen mission-capable over long careers. Emphasize support systems, not punishment. Encourage self-directed progress and unit-based accountability.

Comparisons with other service fitness reforms

Several U.S. military services have revisited fitness assessments in recent years. Those changes reflect an overall trend: alignment of physical standards with operational tasks and an emphasis on injury prevention and sustained performance.

Similarities and differences

  • Like the Army’s previous shifts toward combat-relevant tasks, the Air Force is introducing occupational specificity and higher minimums tied to mission requirements.
  • Unlike simple run-and-sit-up models of the past, modern assessments commonly blend aerobic, strength, and job-specific components to measure comprehensive readiness.

Lessons from other branches Early learning from other services shows that:

  • Clear communication and phased implementation reduce backlash.
  • Robust training supports and medical coordination minimize increased attrition due to injuries.
  • Data collection during diagnostic windows informs necessary adjustments before standards go fully live.

The Air Force’s baseline window mirrors these lessons, giving the service a chance to refine charts and guidance before official scores are used broadly in personnel processes.

Measuring success: metrics the Air Force should track

Successful implementation requires ongoing measurement. Proposed metrics:

  • PFRA pass rates across demographics, specialties, and installations during diagnostic and official windows.
  • Injury rates before and after policy change, with emphasis on overuse injuries and time-loss injuries.
  • Retention and promotion trends in conjunction with PFRA scoring to detect unintended career impacts.
  • Utilization rates of MFLs, the Warfighter Fitness Playbook, and pregnancy/postpartum resources.
  • Time-to-readiness improvements for units deploying with members who completed the new assessments.

Data transparency will allow leadership to adjust thresholds, expand support where needed, and validate the policy’s alignment with readiness objectives.

Potential criticisms and realistic responses

No major policy shift is immune to critique. Anticipated concerns and pragmatic responses:

Concern: Higher standards will push good Airmen out. Response: The program emphasizes career-long fitness habits and offers diagnostic flexibility, training resources, pregnancy/postpartum guidance, and medical accommodations. Integration with evaluations aims to contextualize fitness within broader performance.

Concern: Increased testing requirements will create administrative burdens. Response: The baseline window and phased approach allow workload distribution. Installations are directed to provide MFLs and standardized testing support to streamline administration.

Concern: Body composition scoring is imprecise and biased. Response: Standardized measurement protocols and trained testers reduce error. The Air Force will review aggregated data from the baseline period to ensure fairness and adjust protocols as necessary.

These responses must be matched with transparent data and operational adjustments to maintain credibility.

Practical checklist for Airmen and units

A concise operational checklist simplifies action steps during the baseline period.

For Airmen

  • Review the updated PFRA scoring charts and identify your correct chart (standard or occupationally specific).
  • Sign up for diagnostic testing during the March–June 2026 window.
  • Consult MFLs or medical personnel for personalized training plans.
  • Consider electing to record a diagnostic score if it aligns with seasonal or deployment considerations.
  • Use the Warfighter Fitness Playbook and pregnancy/postpartum guide if applicable.

For commanders

  • Publicize baseline testing schedules and testing criteria.
  • Ensure testing staff are trained and courses are measured or provisional until certification.
  • Document diagnostic test conditions and elect-to-record decisions.
  • Track unit-wide trends and coordinate targeted interventions.
  • Prepare evaluation writers to include contextual fitness detail in AFI 36-2406 review processes.

Implementation risks and mitigation strategies

Risk: Uneven test administration leads to score disputes. Mitigation: Certify courses, train testers, and document testing conditions.

Risk: Increased injuries as Airmen aggressively train to meet new minimums. Mitigation: Emphasize progressive overload, recovery, and access to MFLs and medical guidance.

Risk: Disproportionate effects on specific demographics or geographic regions. Mitigation: Use baseline data to identify trends, adjust charts if necessary, and provide tailored support for at-risk populations.

Proactive leadership, clear procedures, and data-driven adjustments will reduce these risks.

The broader rationale: aligning fitness with the mission and life

The update frames fitness not as an episodic test but as a sustained capability spanning an Airman’s career. The approach is practical: higher minimums protect health and mission effectiveness; occupational specificity ensures standards reflect job demands; and expanded support embeds sustainable practices rather than quick fixes.

Leaders cite long-term health as an explicit objective. Airmen better prepared physically avoid chronic conditions that shorten careers and impair quality of life. The program’s comprehensive resources—strength and conditioning guidance, nutrition, recovery, pregnancy support—reflect a holistic approach to readiness.

How to follow developments and where to find resources

Airmen and leaders should consult the MyFSS Knowledge Base for the PFRA Due Date Matrix and local testing guidance. The Air Force published score charts and resource documents, including the Warfighter Fitness Playbook and the Pregnancy & Postpartum Performance Training Guide, on AFPC portals. AFMAN 36-2905 will provide final certification and measurement details.

Installations will publish test events, and MFLs will host informational sessions and group training. Command channels should communicate local scheduling and administrative instructions.

FAQ

Q: When do the new standards take effect? A: Diagnostic testing begins March 1, 2026. Official scoring against the updated standards begins July 1, 2026.

Q: Can I record a diagnostic score as my official PFRA result? A: Yes. Airmen who complete a PFRA during the baseline period may elect to record their diagnostic score as an official fitness test score.

Q: Does body composition count toward my PFRA score? A: Yes. Body composition returns as a scored component. It may be taken up to five duty days before testing the remaining PFRA components.

Q: Are there different charts for special occupations? A: Separate scoring charts are available for Occupationally Specific Physical Fitness Assessments, including AFSPECWAR and EOD. Ensure you test against the correct chart for your specialty.

Q: How will PFRA scores affect my career? A: PFRA results will be integrated into annual evaluations under AFI 36-2406 as one component of an Airman’s overall performance assessment. Evaluations will contextualize fitness within broader performance metrics.

Q: What resources are available to help me prepare? A: Installations will provide Master Fitness Leaders to advise units, and the Air Force has published the Warfighter Fitness Playbook 2.0 and a Pregnancy & Postpartum Performance Training Guide. Medical and nutrition services on base can offer individualized support.

Q: What if my installation’s 2-mile run track isn’t certified yet? A: The Air Force is certifying 2-mile run tracks while AFMAN 36-2905 will finalize measurement guidance. Use the baseline window to gather diagnostic data if certification is pending and document any provisional test conditions.

Q: How will the Air Force ensure fairness across demographics and locations? A: The baseline period is designed to collect data for chart assessment and refinement. The service has emphasized standardized testing protocols, certified tracks, and trained testing personnel to maintain fairness. Adjustments can be made based on collected data.

Q: What should commanders do during the baseline period? A: Commanders should publicize testing schedules, ensure trained staff and correct charts are used, connect Airmen with MFLs and medical resources, document testing conditions, and prepare to contextualize PFRA results in evaluations.

Q: Will there be medical accommodations for injuries or pregnancy? A: Yes. The directive and related guides outline accommodations and reconditioning pathways. Medical profiles and the Pregnancy & Postpartum Performance Training Guide provide structured approaches for safe return to fitness and duty.

Q: Where can I find the new score charts and guidance documents? A: The Air Force Personnel Center (AFPC) published updated score charts and fitness resources on its portals. Consult MyFSS and installation fitness offices for access and local implementation guidance.

Q: What happens if I fail the PFRA under the new standards? A: Units will follow established remediation and re-test policies. Commanders, medical staff, and MFLs should coordinate individualized improvement plans emphasizing safe, progressive training and monitoring.

Q: Will the Air Force adjust standards after the baseline data is analyzed? A: The baseline period is intended to provide data for evaluation and refinement. The Air Force retains the ability to modify charts or protocols based on findings to ensure standards are equitable and aligned with readiness goals.

Q: How does this change affect reserve and guard components? A: The directive applies across active duty, and guidance for reserve components will follow service policy and administrative procedures. Reserve and Guard units should coordinate with their respective personnel centers and installation resources to schedule diagnostic testing and comply with timelines.

Q: Who certifies Master Fitness Leaders and testing personnel? A: Certification is conducted through established Air Force fitness training pipelines. Installations maintain records of certified MFLs and testing personnel; commanders should verify staff qualifications before test events.

Q: How will data privacy and medical confidentiality be handled when PFRA scores are included in evaluations? A: Evaluation guidance requires contextualization and appropriate handling of medical information. Protected health information remains within medical channels; fitness scores used in evaluations should be documented in accordance with privacy and personnel policies.

Q: Where can I raise concerns or request clarification about the new PFRP? A: Contact your installation fitness office, MFL, or commandant of services. For policy clarifications, use AFPC portals and the MyFSS Knowledge Base to submit questions or seek official guidance.


The Air Force’s modernization of the Physical Fitness Readiness Program aims to align physical standards with operational realities and lifelong health. The baseline diagnostic window allows Airmen and commanders to adapt, measure, and plan before the new standards count officially. With targeted resources, occupational specificity, and a data-driven implementation approach, the service intends to strengthen readiness without sacrificing fairness or sustainability.

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