Aircraft maintainers assigned to the 28th Aircraft Maintenance Squadron, assist as Airmen from the 99th Logistics Readiness Squadron, Nellis Air Force Base, Nev., refuel a B-1 bomber prior to a Red Flag 16-2 night training sortie at Nellis AFB, March 10, 2016. At Red Flag exercises, the Nellis flightline can be home to more than 160 U.S. Air Force, joint service and coalition aircraft, all requiring large amounts of fuel on a tight schedule. (U.S. Air Force photo by Senior Airman Joshua Kleinholz/Released)