Crew chiefs of the 37th Aircraft Maintenance Unit conduct preventative maintenance on a B1-B Lancer Sept. 22, 2015 at Al Udeid Air Base, Qatar. The aircraft is assigned to the 37th Expeditionary Bomber Squadron. (U.S. Air Force photo/Staff Sgt. Alexandre Montes)
<br>Unit: 379th Air Expeditionary Wing
Staff Sgt. Alex Montes
Taken on 22 September 2015
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