Recruits with the 131st Rescue Squadron do sit ups as part of the U.S. Air Force Physical Ability and Stamina Test at Moffett Air National Guard Base, California, May 25, 2021. If selected, pararescue candidates must complete more than two years of special warfare, airborne, survival and medical training in order to become a pararescue specialist. (Courtesy photo by U.S. Air National Guard)