ELLSWORTH AIR FORCE BASE, S.D. -- A B-1B Lancer from the 37th Bomb Squadron, taxis out to the runway before take-off, June 22. Carrying the largest payload of both guided and unguided weapons in the Air Force inventory, the multi-mission B-1 is the backbone of America's long-range bomber force. (U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)