Tech. Sgt. Walter Bolles, 380th Expeditionary Operations Support Squadron E-3 Sentry aircrew flight equipment technician, carries life preservation vests June 19, 2019, at Al Dhafra Air Base, United Arab Emirates. In the event of landing on a body of water the LPUs will allow the aircrew to conserve energy and stay afloat until rescue teams pick them up. (U.S. Air Force photo by Staff Sgt. Chris Thornbury)