LANGLEY AIR FORCE BASE, Va. -- Fifty local military members from all branches march with state flags during the 2009 Yorktown Day parade in Yorktown, Va., Oct. 19. Military members represented each state while commemorating the Battle of Yorktown, which brought an end to the American Revolutionary War. (U.S. Air Force photo/Senior Airman Zachary Wolf)

LANGLEY AIR FORCE BASE, Va. -- Col. Matt Molloy, 1st Fighter Wing commander, salutes the flag during the 2009 Yorktown Day parade in Yorktown, Va., Oct. 19. Langley Airmen marched with members of the local community during the parade commemorating the Battle of Yorktown, which brought an end to the American Revolutionary War. (U.S. Air Force photo/Senior Airman Zachary Wolf)

LANGLEY AIR FORCE BASE, Va. -- Airman 1st Class Amy Aguilera, U.S. Air Force Heritage of America Band vocalist, performs the national anthem during the 2009 Yorktown Day in Yorktown, Va., Oct. 19. Yorktown Day commemorates the Battle of Yorktown, which brought an end to the American Revolutionary War. (U.S. Air Force photo/Senior Airman Zachary Wolf)