POW/MIA Ceremony Deputy Defense Secretary Pat Shanahan speaks during 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 SHARE: Download: Full Size (1.15 MB) Credit: Brigitte N. Brantley VIRIN: 170915-D-GO396-0236Y.JPG Photo Gallery