U.S. AIR FORCE ACADEMY, Colo. – Trainees with the 302nd Airlift Wing Development and Training Flight hike at the U.S. Air Force Academy, Colorado, during a field training day, April 6, 2019. The trainees were led by Master Sgt. Nathan Martinez, a 302nd Operations Support Squadron Survival, Evasion, Resistance and Escape specialist, who taught them basic navigation skills, how to build different shelters and find food while working together as a team. (U.S. Air Force photo by Staff Sgt. Tiffany Lundberg)