I was sitting in my dining room, chilling, and playing roblox, when I heard a siren. There is an open field that is blocked off, behind my backyard. That was where it sounded like it was coming from. My little brother heard it too (however, when I asked my Mother about it, she said she never heard it). Anyways, at first, I thought someone was messing around with a speaker. It was loud, but not very loud. I heard bomb alarms and a someone speaking. It scared the hell out of me and my brother. It didn't actually occur to me until later that night in bed, that that could have been Sirenhead.