That could be a possibility, although I live pretty far away from Missouri, and the Cyclone is a massive and heavy siren. Although there seem to be a lot of enthusiasts in that area, so Ill let them have a go. Still it would make for a pretty cool first siren!
I emailed Eldon's EMA, and learned that they test on the first Wednesday of the month at 10am, weather permitting. I also can confirm that the siren is still there, as of my last visit in early march of this year
One of Indianola, Iowa's old RM-127's is currently sitting in my backyard.