Senior Airman Alex Nolan, a dedicated crew chief with the 28th Aircraft Maintenance Squadron, cycles mechanical fluids in and out of a B-1 bomber prior to a Red Flag 16-2 night training sortie at Nellis Air Force Base, Nev., March 10, 2016. Preparations for safety and operability start hours before flight to ensure aircrews get the most out of their training experience. (U.S. Air Force photo by Senior Airman Joshua Kleinholz/Released)