Gas Man A Marine Corps range safety officer spreads tear gas during live-fire training as part of Exercise Koolendong 16 at Bradshaw Field Training Area, Northern Territory, Australia, Aug. 18, 2016. Marine Corps photo by Sgt. Sarah Anderson SHARE: Download: Full Size (0.83 MB) Tags: Marines, training, Marine Corps Credit: Sgt. Sarah Anderson VIRIN: 160818-M-LV138-291A.JPG Photo Gallery