George Evans, Rolls-Royce mechanic, and Ben Choates, Air Force Engineering Technical Service mechanics, perform maintenance and run a series of tests on the engine of a C-130J Super Hercules, Ramstein Air Base, Germany, March 12, 2012. The Rolls-Royce Company builds aircraft engines as well as provides support for maintenance. (U.S. Air Force photo/ Airman 1st Class Caitlin O'Neil-McKeown)