Soldier Stance Indiana Army National Guard Sgt. Gage Byrne, with the 53rd Civil Support Team, holds the American flag during the opening ceremony of the Toxic Valley 2019 exercise at the CBRN Training and Testing Center in Zemianske Kostol'any, Slovakia, Sept. 9, 2019. The field training exercise, involving NATO allies Belgium, Czech Republic, France, Hungary, Poland, Slovenia, Slovakia and the United States, provides a venue to train, integrate and evaluate chemical response teams. SHARE: Download: Full Size (2.87 MB) Credit: Indiana Air National Guard Staff Sgt. Justin Andras VIRIN: 190909-Z-OQ080-0077.JPG Photo Gallery