In this photo provided by the Alaska National Guard, an F-22 Raptor fighter jet hooks up to an Alaska Air National Guard KC-135 Stratotanker, from the 168th Air Refueling Wing, to conduct in-air refueling over the Joint Pacific Alaska Range Complex during their fighter/bomber exercises, May 1, 2014. Personnel changes implemented at the national level may hinder the Alaska Air National Guard's ability to refuel U.S. and Canadian fighter jets when they scramble to escort Russian bombers nearing North American air space. (Lt. Bernie Kale/Alaska National Guard via AP)