Marine Corp. Lt. Gen. Tom Waldheuser, center, greets Sen. Chuck Hagel, R-Neb., right, and his wife Lilibet, as they arrive at the Pentagon to be sworn-in as Secretary of Defense, in Arl

 

              Marine Corp. Lt. Gen. Tom Waldheuser, center, greets Sen. Chuck Hagel, R-Neb., right, and his wife Lilibet, as they arrive at the Pentagon to be sworn-in as Secretary of Defense, in Arl
Marine Corp. Lt. Gen. Tom Waldheuser, center, greets Sen. Chuck Hagel, R-Neb., right, and his wife Lilibet, as they arrive at the Pentagon to be sworn-in as Secretary of Defense, in Arlington, Va., Wednesday, Feb. 27, 2013. Waldheuser will be Hagel's Senior Military Assistant. (AP Photo/Cliff Owen)