Over the weekend (on Saturday afternoon), I stopped by the fire station in Brea at 555 N. Berry Street to check out the Thunderbolt 1000T located on the training tower only to be told that it has recently been disconnected.
A month or two ago, the fire station underwent remodeling on the interior and in the process, the took out the AR timer that sat on the wall in the apparatus bay.
The holes in the wall have been patched and the walls themselves repainted; covering up any sign that the was an AR timer there.
A check of the main control panel (RCM-1) and the nearby vintage Square-D disconnect switch shows that there was still power going to the siren itself. The guy who accompanied me to look at it, Timothy, let me look in the RCM-1 and growl it for 1/2 a second so it still works. However, I was told that the upper floors of the training tower had been deemed unsafe (he pointed me to where it was sagging) and they may have plans to also tear the tower down as well (which also supports the Thunderbolt) so this may be the last time it would be there.
The good news though was that Tim also told me to contact another person at the station (Mr. Long) about the AR timer and that there may still be a chance that it's in storage somewhere. The Thunderbolt itself, however, I have to speak to the city hall about acquiring. Mr. Long was not there on the weekends but I was told to come back on Wednesday.
Timothy and I did look in a storage shed nearby but we didn't find the AR timer. He did spot this gray box on a shelf in the with the CD logo on it which we though was a Geiger counter but when we got it out for a closer look, it said Motorola Radio-telephone on it.