Today, I finally talked to someone at Electrical Maintanence for the city of Louisville, who knew what I was talking about! His name is Jim Byers, and he also gave me some really good information.
Sadly, the Kerick Elementary School Thunderbolt 1000T had to get a replacement head recently, so it probably sounds different than it used to now. There are plans to relocate both the Louisville Water Company Thunderbolt 1003, which is perhaps the only 1003 in our city, and the Pope Street Thunderbolt 1000T. One of those sirens may be replaced with either a 2001, or a Modulator.

However, they haven't decided what they're going to do yet. Also, two new sirens were put up recently, one off of Preston Highway, and one off of Dixie Highway. I'm not sure what model one of them is, but the other one is a refurbished Triad. . The duel tone Modulator at the Waterfront building had some problems, so they had to reload the tones into it, so that's probably why it's single tone now.
I told him about the countdown timers on our Thunderbolts being set too short, and I explained to him how they couldn't wail properly the way they were set, so the countdown timers may be returned to their original eight to ten second settings. I mensioned this board to him, and he may register here. He acted like the city may be interested in Thunderbolt and Triad parts and even whole sirens, which sometimes appear for sale here.