That's actually the same one that I have in the videos. I was there recording it the same day as he was (May 1st, 2007). You can see me parked on the left side of the siren in his video.
The other siren you hear is an EOWS612 in Hahaione Valley behind him.
That Thunderbolt has a C series blower in it. Are C series blowers rare? I've only heard one in the lower 48, and all the others were in Hawaii. The one I've heard in the lower 48 happens to be at Waggener Highschool, right here in Louisville.
Josh
Owner of a Federal Signal Model D Audio YouTube