We got an inside look at how United States Army recruits are exposed to tear gas during basic combat training. Senior video correspondent Graham Flanagan spent four days at the Army's Maneuver Center of Excellence inside the Fort Benning military base near Columbus, GA. Recruits are exposed to CS gas, more commonly known as tear gas. Side effects include burning on the skin and in the eyes, and profuse discharge of mucus. While wearing a gas mask, the recruits spend approximately five minutes inside a gas chamber where CS tablets are burned to create the gas.