2019 Patriot Day Ceremony
Firemen assigned to the 22nd Civil Engineering Squadron, ring the last alarm during the Patriot Day Ceremony Sept. 11, 2019, at McConnell Air Force Base, Kan. The last alarm honors firefighters that lost their lives on 9/11, it is represented by a bell that is rung three times, signifying the end of their final alarm. (U.S. Air Force photo by Airman 1st Class Alexi Bosarge)