Defense Secretary Ash Carter, right, escorts Air Force Airman 1st Class Spencer Stone, left, Oregon National Guard Specialist Alek Skarlatos, second from left, and civilian Anthony Sadler to an awards ceremony in the Pentagon's courtyard held in their honor for their heroic actions in stopping a gunman on a Paris-bound train outside of Brussels last month, Sept. 17, 2015. DoD Photo by Glenn Fawcett