[two hours, SLYT] From a talk presented at https://cackalackycon.org/, professional physical pentester Deviant Ollam explains fire codes and fire safety systems (such as fire doors and sprinkler systems).

A theme in the talk is looking and sounding like you belong somewhere you don't; however, there is plenty of interesting information about egress and exits, fire safety systems and fire codes. Previously on Metafilter, Elevators Other videos in the same vein from Deviant Ollam: Also elevators, and Keys, with Howard Payne, and Doors