President Barack Obama shakes hands with troops and civilians during his visit to Camp Lejeune, N.C., Feb. 27, 2009. Obama was on the Marine Corps installation to discuss current policies and an exit strategy from Iraq. U.S. Marine Corps photo by Lance Cpl. Michael J. Ayotte

U.S. troops and civilians listen to President Barack Obama during his visit to Camp Lejeune, N.C., Feb. 27, 2009. Obama was on the Marine Corps installation to discuss current policies and an exit strategy from Iraq. U.S. Marine Corps photo by Lance Cpl. Michael J. Ayotte

President Barack Obama talks to troops and civilians during his visit to Camp Lejeune, N.C., Feb. 27, 2009. Obama was on Marine Corps installation to discuss current policies and an exit strategy from Iraq. U.S. Marine Corps photo by Lance Cpl. Michael J. Ayotte

President Barack Obama greets some of the 200 Marines assigned to Marine Corps Air Station Cherry Point, N.C., and the 2nd Marine Aircraft Wing during part of his brief visit, Feb. 27, 2009. Obama and his staff stopped aboard the air station to transfer from Air Force One to take helicopters to Camp Lejeune, N.C. U.S. Marine Corps photo by Cpl. Charles E. McKelvey

Xaria, a U.S. Air Force military working dog, and trainers Rodney Sparkowich and Tim Bartlett put on a demonstration at the San Antonio Stock Show and Rodeo in Texas, Feb. 23, 2009. The men are members of the 341st Training Squadron at Lackland Air Force Base. U.S. Air Force photo by Alan Boedeker

From left: Albert C. "Clai" Ellett, acting director of Washington Headquarters Services, Deputy Secretary of Defense William Lynn, and Eileen Roberson, administrative assistant to the Undersecretary of the Navy, hit the wall with sledgehammers during a demolition ceremony to commemorate the beginning of the renovation of Wedge 5 of the Pentagon, Feb. 27, 2009. DoD photo by U.S. Navy Petty Officer 1st Class Molly A. Burgess

U.S. Air Force Lt. Col. Sam Milam taxies down the flightline in an A-10 Thunderbolt II after logging the unit's 10,000th combat flight hour during a mission on Bagram Airfield, Afghanistan, Feb. 24, 2009. Milam is the 75th Expeditionary Fighter Squadron commander. U.S. Air Force photo by Staff Sgt. Jason Lake

U.S. Navy sailors aboard the guided-missile cruiser USS Lake Champlain test the ship's fire hoses during a training exercise in the Pacific Ocean, Feb. 13, 2009. U.S. Navy photo by Petty Officer 2nd Class Daniel Barker