A U.S. Marine with Black Sea Rotational Force 17.1 demonstrates the importance of staying calm while exiting a structure filled with CS gas at Novo Selo Training Area, Bulgaria, Aug. 2, 2017.
This range was a part of Exercise Platinum Lion 17.2, a multinational exercise to build relationships with NATO Allies and partner nations through combined-arms training. (U.S. Marine Corps photo by Sgt. Patricia A. Morris) www.dvids.hub.net. Original public domain image from Flickr