Adam DeRycke, a Survival, Evasion, Resistance and Escape Specialist Training Orientation Course instructor and training manager, at left, monitors the performance of candidates during a mock physical fitness assessment at the SERE specialist schoolhouse at Joint Base San Antonio-Lackland, Texas, March 22, 2018. Candidates are critiqued on physical training, backpacking, basic public speaking, outdoor living and survival skills and improvising to assess their potential success as a future SERE specialist. (U.S. Air Force photo by Staff Sgt. Chip Pons)