Designed by digital artist Milen Ivanov, known for his work in video game vehicle design ... Two military-grade gas masks are included to protect against chemical warfare, tear gas and other ...

Under the protocol, the subject is strapped to a gurney, forced to breathe pure nitrogen gas through a mask placed on their face, depriving them of oxygen.

to experience its effects and to know how to properly use a gas mask. SSgt Antonio Garay: Gas chamber's important because it builds confidence. Confidence in the gear, confidence in the drill ...

A sign hanging above the doors to the gas chamber reads, "Even the brave cry here." A dozen at a time, Marines are ushered into a small, dark, brick room. A thick haze of o-Chlorobenzylidene ...

Now put your books down…and get your gas masks out. Quietly. Now take them carefully out of their boxes - no, no, Isobel, don't drag at it…you show her how to do it, Margaret, will you.