An airman looks through the names of the 22 instructor pilots from the 3645th Pilot Training Squadron, whom were killed in Southeast Asia during the Vietnam War, carved on a memorial at Ribas-Dominicci Circle at Laughlin Air Force Base, Texas, May 8, 2013. A memorial dedication ceremony is scheduled for May 31, 2013. (U.S. Air Force photo/Airman 1st Class John D. Partlow)