Defense Secretary Ash Carter visits the gravesite of Marine Corps 1st Lt. Robert Michael Kelly at Arlington National Cemetery in Arlington, Va., May 22, 2015. Kelly is the son of Marine Corps Gen. John F. Kelly, a personal friend of Carter. Defense Secretary Ash Carter visits the gravesite of Marine Corps 1st Lt. Robert Michael Kelly at Arlington National Cemetery in Arlington, Va., May 22, 2015. Kelly is the son of Marine Corps Gen. John F. Kelly, a personal friend of Carter. SHARE IMAGE: Download Image: Full Size (0.24 MB) Tags: Photo Essays Photo By: VIRIN: 117545-U-RFN33-430.jpg Photo Gallery