An Alaska Air National Guard 168th Air Refueling Wing KC-135R Stratotanker aerial refueling aircraft aerial refuels a U.S. Air Force 27th Fighter Squadron, 1ST Fighter Wing, F-22A Raptor fighter aircraft in the skies over Alaska on June 9, 2006, during Exercise Northern Edge 06, which is a U.S. Pacific Command joint training exercise, hosted by the Alaskan Command, to prepare U.S. forces to respond to a crisis in the Asian and pacific region. (U.S. Air Force photo by STAFF SGT. Joshua Strang) (Released)