Keywords: DF-ST-91-06506 (5375274159).jpg Three military members are silhouetted against the afternoon sky as they sit behind an M-2 50-caliber machine gun atop an armored vehicle parked on the perimeter of an air base during Operation Desert Shield https //www flickr com/photos/usairforce/5375274159/ DF-ST-91-06506 2011-01-21 11 10 https //www flickr com/people/39513508 N06 US Air Force from USA PD-USGov Official U S Air Force https //flickr com/photos/39513508 N06/5375274159 2016-12-15 00 53 19 United States Government Work Files from the U S Air Force Flickr stream Files uploaded by Reguyla United States Air Force |