From left to right, Deputy Defense Secretary Pat Shanahan, Army Command Sgt. Maj. John W. Troxell, the senior enlisted advisor to the chairman of the Joint Chiefs of Staff, and Sen. John Boozman attend the National POW/MIA Recognition Day ceremony at the Pentagon, Sept. 15, 2017. The day is observed every year on the third Friday in September and honors those who were prisoners of war and those who are still missing in action. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley