FILE PHOTO -- The B-2 Spirit approaches the boom of a McGuire Air Force Base, New Jersey KC-10A Extender during a Capstone orientation flight. Capstone is a Joint Airborne/Air Transportability Training mission providing interservice training for the wartime application of airlift. Through Capstone, senior level officers are able to observe the significance of airlift and its role in all military operations. (U.S. Air Force photo by Staff Sgt. Scott H. Spitzer)