A B-1B Lancer deployed from Ellsworth Air Force Base, South Dakota,flies a night sortie May 4 at Al Udeid Air Base, Qatar. The multi-mission B-1 is the backbone of America's long-range bomber force. The B-1 was initially developed in the 1970s as a strategic bomber and as a replacement to the B-52 Stratofortress. (U.S. Air Force photo illustration/Senior Airman Jared Trimarchi)