Keywords: DF-ST-92-07594 (5375931290).jpg U S Air Force security police prepare a 40mm Mark 19 Model 3 grenade launcher for firing during a demonstration as part of Operation Desert Shield https //www flickr com/photos/usairforce/5375931290/ DF-ST-92-07594 2011-01-21 11 36 https //www flickr com/people/39513508 N06 US Air Force from USA PD-USGov Official U S Air Force https //flickr com/photos/39513508 N06/5375931290 2016-12-15 01 07 19 United States Government Work Files from the U S Air Force Flickr stream Files uploaded by Reguyla United States Air Force |