Aspen Security Forum
Air Force Chief of Staff Gen. Mark A. Welsh III answers a question from John King, a CNN National Correspondent, during the Aspen Security Forum in Aspen, Colo., July 17, 2013. Welsh opened up the four-day event with a session focusing on the importance of airpower for the nation. King moderated the session and touched upon other topics impacting today's Air Force, the Department of Defense and national security. (U.S. Air Force photo/Scott M. Ash)