Tech. Sgt. Timothy Kenny, a 28th Aircraft Maintenance Squadron aircraft electrical environmental craftsman, inspects an aircraft part with the help of a technical order during Combat Raider 18-2 at Ellsworth Air Force Base, S.D., May 14, 2018. Combat Raider is a joint exercise that involves multiple airframes from different bases to prepare Airmen and the Air Force for potential future conflicts. (U.S. Air Force photo by Airman 1st Class Thomas Karol)