Barack Obama speaks at a news conference in Chicago

Barack Obama speaks at a news conference in Chicago

Democratic presidential hopeful Sen. Barack Obama (D-IL) (R) shakes hands with Air Force Brigadier General James Smith (from left), Admiral Don Guter, and Air Force Major General Scott Gration, all retired, before a news conference in Chicago on March 12, 2008.Obama received the endorsement of several retired Admirals and Generals Wednesday. (UPI Photo/Brian Kersey)