Technical Sgt. David MacDonald, a drummer for the U.S. Air Force Band’s Airmen of Note, performs for an impromptu crowd at Union Station. The United States Air Force Band surprised commuters at Union Station with a World War II Holiday Flashback Dec. 3, 2015. The event was designed to be a special holiday musical presentation celebrating the service and sacrifices of our nation’s World War II veterans. (U.S. Air Force photo/Jim Lotz)