A commemorative helmet is displayed at sjafb, N.C., Sept. 10, 2020. The number on the helmet signifies the 343 firefighters who sacrificed their lives to save others at the twin towers on Sept. 11, 2001. (U.S. Air Force photo by Staff Sgt. Victoria Boyton) #AirForce #Airmen #Airman #WeekInPhotos #AirmanTopShot #September11 #RememberThem #PatriotDay #Firefighters