Since I was staying in Enid at my aunt and uncle's house while I was at the meet-up, I decided to record Enid's monthly siren test. This is one of several restored Thunderbolts in Enid and happens to be pretty close to where I was staying.
http://youtu.be/LN4lcYVgrP0
I have about an hour of video to go through from the meet-up, which I'll do tomorrow. Like most of us that went, I'm pretty dang tired.