141015-Z-MI929-010 – A fuels technician and an aircraft crew chief refuel an A-10 Thunderbolt II aircraft at Selfridge Air National Guard Base, Mich., Oct. 15, 2014. The fuels shop at Selfridge recently began using Jet A+ fuel, switching from JP-8, a change that is being made across the Department of Defense. (U.S. Air National Guard photo by Terry Atwell)