Tech. Sgt. Kelena Hendricks and Senior Airman Dustin Brannan, 379th Expeditionary Operations Support Squadron air traffic control, look over base specific instructions for landing aircraft September 2, 2015 at Al Udeid Air Base, Qatar. While on shift, airmen of the 379th EOSS ATC review airfield operation regulations to stay current and keep coalition forces safe as aircraft taxi, take off and land. (U.S. Air Force photo/Staff Sgt. Alexandre Montes)