Here's a few pictures I took a couple months ago on a trip to Las Vegas. The Thunderbolt on the airport is either gone, or I couldn't find it. If you want anymore pictures of the same sirens featured in this post, just PM me.
Warning - Large Pictures
Whelen 2809 - Tooele, UT
Sterling 2V8 - Stockton, UT
Darley Model 5 - Kamas, UT
Darley Model 5 - Overton, NV
Thunderbolt 1000X - Museum in Henderson, NV
Old and New Model 2s - Scipio, UT
Whelen Vortex - Boulder Dam, AZ
8 Port Fedelcode Model 5 - Park City, UT
STH-10 - St George, UT
Model 5 - Leeds, UT
Darley Champion - Kanaraville, UT
Model A? - Kanaraville, UT