Rear Admiral William Truelove, Canadian Navy, and John A. Atela, director of the Office of Partner Engagement, stand in silence at the Mount Rushmore National Memorial, S.D., Sept. 11, 2016, to honor the 15th anniversary of the attacks on Sept. 11, 2001. A wreath laying ceremony was conducted by senior foreign and U.S. attachés on behalf of the Foreign Defense Attaché Corps, an organization based in Washington D.C., and made up of more than 120 nations. (U.S. Air Force photo by Senior Airman Anania Tekurio)