Tech. Sgt. Brian Luther and Staff Sgt. Chris Graham refill an oil cart prior to launching a B-1B Lancer May 8, 2015, at Andersen Air Force Base, Guam. The B-1s recently conducted test and training missions in the Asia-Pacific region to validate the modified jet's long-range strike capability and to further develop maritime tactics, techniques and procedures for the airframe. Luther and Graham are assigned to the 9th Aircraft Maintenance Unit at Dyess Air Force Base, Texas. (U.S. Air Force photo by Senior Airman Katrina M. Brisbin/Released)