The United States Air Force Band performs a holiday flash mob Dec. 2, 2014, at the Smithsonian National Air and Space Museum Udvar-Hazy Center in Chantilly, Va. The band’s mission is to honor those who have served, inspire American citizens to heightened patriotism and service, and positively impact the global community on behalf of the U.S. Air Force and America. (U.S. Air Force photo/Senior Master Sgt. Kevin Burns)