808: trainees quickly donning gas masks.
810: running out of time on the drill.
812: instructor motions recruits to move into position, remove masks and recite an answer.
814: males have a much more dramatic reaction, as the gas irritates any moist membranes or skin.
818: training instructors overseeing, calling out directions.
819: rest of the squad staggering out.
809: notice the large number of comfort stations, a guide to the effects of CS smoke.
811: CS smoke rises in the gas chamber
813: females can recite with only a mild reaction.
815: more males enduring an eye-blinking, knee jerking, nose-running, choking reaction.
817: leaving on the buddy system, with great difficulty in seeing where to walk.