Rourke brought up the rear, only lowering and setting the safety on the shell rifle when he managed to enter the apartment. He grabbed an extra box of the holy water rounds, and a rifleman's kit bag, and stuffed the rounds and some other odds and ends (grenades and such) into it. "Better let me and Talbot lead the way through the Labyrinth," he said, as he scooped up several gasmasks with heavy-duty filters and short tanks attached, and handed them around. "Don't put these on 'til we tell you."
"They don't 'ave a lot of air in the tank, and not all areas are lethal; The Labyrinth belongs to th' Nadir Court, mostly, and quite a few of our folk don't 'ave to breathe, for reasons that are probably obvious." He he paused, then continued, "For that reason, many of the stretches and especially the deeper ones are filled, boobytrapped ya moight say, with various heavier-than-air gases, mos'ly just methane or straight sewer gas, but there're some really nasty ones down'n th' Tenth Deep an' below. Alroight, let's go, an' everybody stay t'gether."
"Oh, by the by, a good rule's to not fire a gun or light a flame when you 'ave the mask on; almost all o' the gases in the traps are 'ighly inflammable..."