I'm still quite concerned about these electromagnetic door locks of yours. Have you asked anyone in charge about this situation? The locks may actually disengage when the fire alarm goes off. Another thing I would personally want to know is whether the doors unlock when the power goes out. Some don't, that is, they "fail secure".

This situation bothers me because I remember feeling really sorry for some folks when I read a news article a few years back about some office fire. For security reasons, the doors in the stairwell can't be opened from inside the stairwell once they close behind you. A number of office workers were going down the stairs to escape but ran into thick smoke so they had to retreat back upstairs. Unfortunately, they couldn't gain access to any of the floors and they died in the stairwell from the smoke. I understand the security concerns for setting things up that way, but that's tragic.