CBRNE Explanation

During CBRNE, the Basics are walked through various situations and are taught how to deal with them. They also get exposed to tear-gas (which has also resulted in minorly gassed photographers as the wind shifted). They put on their protective gear and gas masks, enter the container of gas, remove their masks, breathe in all the goodness, and then are released to go outside. Then they walk around in circles while flapping their arms and not touching their faces.