Airman First Class Collin Dunn, 28th Logistics Readiness Squadron fuels laboratory technician, fills a fuel truck with JP8 aircraft fuel during an Operational Readiness Exercise at Ellsworth Air Force Base, S.D., Feb. 23, 2012. It can take from up to one to four trucks to refuel the B-1 bomber, depending on its landing load. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)