U.S. Air Force Staff Sgt. Eddie Fore, right, a Survival, Evasion, Resistance and Escape specialist assigned to the 509th Operations Support Squadron, begins to time Staff Sgt. John Mapes, a desk sergeant assigned to the 509th Security Forces Squadron, on a mile and a half run Jan. 17, 2018, at Whiteman Air Force Base, Mo. Mapes took a Physical Ability Stamina Test in order to see if he is physically qualified to cross train into Tactical Air Control Party specialist’s training. (U.S. Air Force photo by Airman 1st Class Taylor Phifer)