Staff Sgt. Adan Nunez, 380th Expeditionary Maintenance Squadron aerospace ground equipment craftsman, attaches an alternator to a four-cylinder diesel engine July 30, 3019, at Al Dhafra Air Base, United Arab Emirates. The engine provides power to a -86 generator which delivers 115 watts to the aircraft. (U.S. Air Force photo by Staff Sgt. Chris Thornbury)