Yes, it is the standard procedure… But looking at the image of the lobby, we can deduce that the procedure didn’t work very well and people perished there (inasmuch as the room is full of zombies, including a zombie guard that probably is the one that says “Hey Mr. Freeman, I had a system crash…” – and if he is there, is secure to say that he fought and died near the desk).
So, my suggestion is still valid. Anyway, it is up to devs implement this. I only said that cause I think this minor detail would add much more caos and terror feeling to the scene.