U.S. Air Force Master Sgt. Travis Shaw, the pararescue medical program manager at Air Combat Command, evaluates Senior Airman D’Vonte Washburn, an aircraft maintenance scheduler with the 1st Maintenance Group, during a Physical Aptitude Stamina Test (PAST) at Langley Air Force Base, Va., March 3, 2016. Washburn tested to meet the requirements for the Combat Control career field. To become a combat controller, candidates endure up to 24 months of rigorous training in numerous courses around the United States. (U.S. Air Force photo by Airman 1st Class Derek Seifert)