Airman 1st Class Clinton Hutto, 28th Maintenance Squadron engine test cell technician, connects two fuel lines on a B-1 bomber engine at the engine test cell at Ellsworth Air Force Base, S.D., Sept. 12, 2014. The test cell has undergone recent upgrades and renovations to meet Ellsworth mission requirements. (U.S. Air Force photo by Airman 1st Class Rebecca Imwalle/ Released)