U.S. Air Force Senior Airman Tyler Harvey, 100th Maintenance Squadron shift leader of consolidated tool kits, moves a purging duct to verify it’s bonded to the aircraft properly Sept. 13, 2016, on RAF Mildenhall, England. Anything that touches the aircraft has to be grounded and bonded because of static electricity that could build up and create a spark. (U.S. Air Force photo by Gina Randall)