Cpl. Matthew Cantrell (left) and Lance Cpl. Ryan Zimmerman, both from the Marine Wing Support Squadron-172, refuel a generator during Exercise Beverly High 09-01 Dec. 4, 2008 at Kadena Air Base, Japan. The joint Air Force-Marine Corps exercise, tested the ability of both services to execute their critical missions under simulated combat conditions. (U.S. Air Force photo/Airman 1st Class Amanda Grabiec)