U.S. Army Sgt. Megan Van Oudenaren, Training and Doctrine Command Band vocalist, sings during the Constitution Day “Support and Defend” concert in Williamsburg, Va., Sept 17, 2014. Van Oudenaren sang as the U.S. Air Force Heritage of America and U.S. Army TRADOC bands performed classic military tunes behind her. (U.S. Air Force photo by Airman 1st Class Kimberly Nagle/Released)