When I lived in the rez at SAIT, it had a new fire alarm system... which by the way was "tested" nearly every fri/sat night.
It would go in stages, the first alarm a light 'binging' sound and sometimes a voice would then say the alarm is being investigated. You didn't have to leave at that point. If there was a problem, it would then escalate to a louder alarm and you would have to leave.
I wish it went to the first stage if the alarm was pulled as this usually happened at 2am. Not fun when it skips right to the "get the hell out now" stage.
At my workplace however, our fire alarm is a handheld air horn. No looking at coworkers asking what the hell that sound was, because you are already out of your chair before that air in the can runs out.
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