Oath of Office Defense Secretary Ash Carter administers the oath of office to Air Force and Navy ROTC students during a commissioning ceremony at Yale University in New Haven, Conn., May 23, 2016. DoD photo by Air Force Senior Master Sgt. Adrian Cadiz SHARE IMAGE: Download Image: Full Size (1.97 MB) Tags: ASH Carter, Travels , Sailors, SecDef, Navy , AIR FORCE, Airmen Photo By: Senior Master Sgt. Adrian Cadiz VIRIN: 160523-D-DT527-406.JPG Photo Gallery