Think fast

I wasn't really on my feet but one time our smoke alarm went off in the middle of the night. I had to think fast because I didn't know what to do and I was still half asleep when the alarm woke me up. At first I thought it was the alarm on my phone but then realized it was 1:00 a.m. and it was the smoke alarm. After I had finally woken up, we spent 30 minutes looking for a fire but it turned out to be just a low battery or something like that in the smoke alarm. I can't really remember much else because I was half asleep and it was a few months ago when this happened.