Maj. Rich Polehemus, 326th Airlift Squadron, 512th Airlift Wing, Air Force Reserve Command, carefully adjusts the throttles of a C-17A Globemaster III during an in-flight refueling from a KC-135R Stratotanker of the 171st Air Refueling Wing, Pennsylvania Air National Guard during a training mission from Dover Air Force Base, Del., June 18, 2013. Lt. Col. Hugh Hamiliton's hand can also be seen on the throttles as a back-up and safety measure. Dover's fleet of C-5M and C-17A's are shared by active duty (436th) and Reserve (512th) Wings. (U.S. Air Force photo/Greg L. Davis)