Capt. Joshua Howell, right, signal officer, and Spc. Eduardo Rincon, chemical Soldier, both assigned to Headquarters and Headquarters Company, 64th Brigade Support Battalion, 3rd Armored Brigade Combat Team, 4th Infantry Division, ignite tablets of CS gas in the chemical, biological, radiological, nuclear and high-yield explosive gas chamber June 26, 2015. (Photo by Capt. Shaun T. Manley)
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