U.S. Army Gen. David Perkins, commanding general of U.S. Army Training and Doctrine Command, administers the Oath of Office to eight ROTC cadets during a Commissioning Ceremony at the College of William & Mary in Williamsburg, Va., May 12, 2017. The Oath of Office is required by U.S. Code prior to commissioning. (U.S. Air Force photo/Staff Sgt. Teresa J. Cleveland)