Me and a few of my friends hit up a Thunderbolt 1000T in Lombard by the highway. We were waiting, then 10 rolled around. We did not hear any sirens in the distance or the one we were at. I uploaded a video and I am very mad since I was happy with how my shot looked. Anyways, does anyone know how or why they failed? Please let me know

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Owner of a Mini 5T and some other mini sirens. I use a SX540 and DJI Mini SE for pictures & videos.
If you want to use pictures in a video, please ask.
YouTube Channel
https://www.youtube.com/channel/UCncn7J ... qkOi3WKkIA