Perimeter Advance

The entry door parted briefly. I cleared the threshold before the latch caught. Outside, the corridor stretches on a quiet industrial carpet runner. Heavy acoustics. Minimal foot traffic. I advanced six paces along the baseboard and identified a recessed fire utility cabinet raised three inches above floor level. The lower metal rim provided a firm handhold. Hoisting my frame onto the steel base flange, I established a concealed observation post behind a brass water valve. Clear view down both corridor wings. Elevation secure.