Narrator: These Marine recruits are being exposed to CS gas, more commonly known as tear gas, to experience its effects and to know how to properly use a gas mask. SSgt Antonio Garay: Gas chamber ...

The mask system replaces the M40/M42 series of field protective masks for the Army and Marine Corps ground and combat vehicle operations, as well as the MCU-2/P series of protective masks for Air ...

“I was a marine, and I – that’s what I had to ... “We were practicing using a gas mask,” Gorelick said. “And they turned the gas on. And I have a gas mask that had a leak.