U.S. Air Force Tech. Sgt. Michael Evans, 23rd Security Forces Squadron flight chief, holds up a photo of himself June 7, 2011, from his tour in Vietnam during the 1970s. Sergeant Evans’ military career spans more than 40 years, and he is very happy that the American public is so supportive of today’s returning veterans. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)