Air Force Staff Sgt. James Mullenix, 312th Training Squadron instructor, rings a bell five times, three times in a row, to signal the end of watch, according to firefighter tradition in honor of the firefighters who lost their lives on Sept. 11, 2001 during the 911 Memorial service at the Department of Defense Louis F. Garland Fire Academy on Goodfellow Air Force Base, Sept. 11, 2018. Before the ringing of the bell there was a reading of the timeline of events that happened on Sept. 11, 2001.

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Keywords: 9/11, air, america, archive, armed, army, defence, force, forces, military, navy, reportage, service, serviceman, servicemen, soldier, states, united, usa