U.S. Secretary of Defense Chuck Hagel holds a news conference about the effects of the 'sequester' on military operations, at the Pentagon in Arlington, Virginia, March 1, 2013. Hagel said on Friday the U.S. Navy would gradually stand down four air wings and the Air Force would immediately cut flying hours as the Pentagon grapples with budget cuts that put at risk "all of our missions." Also pictured is Deputy Secretary of Defense Ash Carter (R). REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS MILITARY BUSINESS)