U.S. Army Staff Sgt. Liam Aguirre performs a pull up while participating in the Murph Challenge at Joint Base Langley-Eustis, Virginia, May 22, 2023. To complete the challenge, participants begin with a 1-mile run, followed by 100 pull ups, 200 push ups, 300 air squats and finish with a final 1-mile run. (U.S. Air Force photo by Senior Airman Anna Nolte)