I went to record a Thunderbolt (unknown if dual or single) and it failed to go off. I have not had luck recording sirens lately! My last two siren record attempts have not gone well. But a STH-10 and possibly some 2001s and/or a Thunderbolt 1000 can be heard in the background. The STH-10 is 2 miles away, so I was quite surprised to hear it. This was reported to Shawnee County EM.
http://www.youtube.com/watch?v=bTSlabAvFgA