Here are my videos from the statewide drill. Any thoughts on what the mystery siren is? Some thoughts are an 8 port Model 5 or an STL-10 with no horns. Windup-wise, I'm leaning towards the latter but I really have no idea.
Mystery Siren:
https://www.youtube.com/watch?v=CneDmzQWInI
STL-10:
https://www.youtube.com/watch?v=2O6hfZz9uG4