U.S. Air Force Master Sgt. Joshua Kowalsky, U.S. Air Force Concert Band cellist, talks with his daughter after their flash mob at the Smithsonian National Air and Space Museum Udvar-Hazy Center in Chantilly, Va., Dec. 2, 2014. 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 by Staff Sgt. Devon Suits/Released)