Members of the Buckley Fire Department honor those who fell during the events of Sept. 11, 2001, as part of the Patriot Day Ceremony Sept. 11, 2015, at the Headquarters Building on Buckley Air Force Base, Colo. Patriot Day is the national day of service and remembrance, in memory of the thousands killed on U.S. soil in the 9/11 attacks. (U.S. Air Force photo by Senior Airman Phillip Houk/Released)