Jolly Tangog, an equipment specialist with Air Force engineering and technical services for the 732nd Air Mobility Squadron, supervises Senior Airman Adam Orton, a jets lead technician, as he uses a C-5M Super Galaxy maintenance trainer on Joint Base Elmendorf-Richardson, Alaska, May 7, 2015. Tangog came up with the cost-saving idea to build a trainer at Elmendorf rather than sending Airmen away on a temporary duty for expensive refresher training. (U.S. Air Force photo/Alejandro Pena)