[lacrew]

We used teargas grenades in Army training....don’t remember any fires.

[Paladin2]

"We used teargas grenades in Army training....don’t remember any fires."

You weren't using the BATFE/FBI tear gas delivery systems.

[Cvengr]

CS is a powder. When going into a CS chamber, they generally lit off a couple of tabs and as they burned, they caught the CS up in the fumes as smoke which then drifted through the chamber. CS grenades, like smoke grenades, usually have an intense flame, which if not properly handled easily causes secondary fires.