They should also stay well clear of lifts, when they are not smashing the doors in with a sledgehammer (they have release keys) causing thousands of pounds worth of damage, they rescue passengers by releasing the brake, if the lift car is in the upper part of the shaft it will roll upwards, which can leave the landing doors open at the floor it was rolled up from with the lift car above. So there is now a situation with landing doors open into an empty shaft which they do not check before leaving site. I have seen this on three separate occasions in public buildings, how no one has been killed is pure luck.