We had a false alarm on our burglar/fire alarm in the middle of the night. I got up, checked the house carefully for fire, and entered the cancel code - all within 2 or 3 minutes of the alarm going off.
It's a centrally monitored alarm, and I thought it was strange that the monitoring station hadn't called us to check that everything was okay. Only, they had, but the alarm was so loud that we hadn't heard the phone. So, I think we are going to have to do something about that.
Anyway, the firemen were very nice about it, and seemed quite pleased that they didn't have to do anything.