I was not in college that long ago and I will say that every time we were told to stay put....it was better to leave, and every time it was better to stay we were told to leave. A dorm is like a big apartment building on steroids. I would check with your residential advisor and campus police to see what equipment/method would suit you best. If you've already moved on then even better.
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Spemque metumque inter dubiis - Hover between hope and fear. (Vergil)