A B-1 bomber takes off from Ellsworth Air Force Base, S.D., to participate in Green Flag 15-2 Nov. 6, 2014. Several B-1 bombers are taking part in the two-week exercise at Nellis Air Force Base, Nev. to practice war-fighting capabilities in preparation for future deployments. (U.S. Air Force photo by Airman 1st Class Rebecca Imwalle/Released)