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 26th MEU was training to complete Marine Corps Bulletin 1500 ... If we have to, we pull them out of the gas chamber and let them take their mask off and get a few more breathes before we ...

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 ...

While the Marine Corps had reversed course on beards in non-combat situations, the issue of combat deployments has come down to where those with beards could wear the aforementioned gas masks.