Firefighters and security forces participate in a 9/11 memorial walk

U.S. Air Force Senior Airmen, Cayden Saurbek, left, and John Hodgkind, left center, firefighters assigned to the 379th Expeditionary Civil Engineering Squadron, join Master Sgt. Jason Garrett, holding the flag, security forces member and Capt. Roy Blackledge, right, operations support officer assigned to the 379th Expeditionary Security Forces Squadron, to participate in an evening 9/11 memorial walk at Al Udeid Air Base, Qatar, Sept. 11, 2017. Traditionally, on the anniversary of the terrorist attacks, firefighters climb 343 stairs in honor of the fire and emergency services members that lost their lives on Sept. 11, 2001. Firefighters and security forces here at Al Udeid Air Base walked 3.43 miles to honor those who lost their lives on Sept. 11, 2001. (U.S. Air National Guard photo by Tech. Sgt. Bradly A. Schneider/Released)