Video find , Thunderbolt and 2001 DC siren

[gil64]

I found this video by Derek Thompson . I love the way both siren sound in perfect harmony.


http://www.youtube.com/watch?v=FpDbijFC ... annel_page

[modernmidnight]

Same sirens in this video. Same recording. http://www.youtube.com/watch?v=LNIM4XSR ... onse_watch



This one is awesome too. They sound so cool together.

http://www.youtube.com/watch?v=7XNl1-fcXXo

[Fireman61341]

Nice.
Sounds similar to Ottawa IL's system where there's a lower toned Thunderbolt 1000 on an 8 story building with a 2001 SRNB in the parking lot below it.