BLUF: It is now slightly harder for certian age groups to max out the run score.

Answer: Air Force officials chose to update their run times and Use a database which is used by the Cooper Institute and recognized by the American College of Sports Medicine. As the new 1.5-mile run times that assess the most important physical fitness component, cardiorespiratory endurance or aerobic fitness, are based on the most current scientific data for age and gender.