A piezo device will generate a small voltage proportional to how much it’s compressed. Might be able sense a loud bang of a bullet going through the windshield when Joe gives the order.
Might also be a microphone as he’s alleging. I’m pretty sure I’ve seen them in that case.
…even though the fucking terrorist spent at least an half hour on facebook live talking about the reason why he brought his coffee can bomb to the library of congress
Honestly, I feel the opposite. That phrasing is a key part of “innocent until proven guilty”. Police and reporters don’t determine guilt, no matter what. So to me, the fact that everyone religiously says “suspect” and “alleged” is a sign that everyone is well trained in this idea and the system is working as it should (at least in this one specific way- I don’t mean to imply the system is in any way fair or unflawed. Fully acknowledging here that it’s deeply racist and broken in most ways).
I suspected it might have something to do with being an acoustic trigger but wow, a vehicle backfire, door slam or anything else sudden and sharp would set it off. Not something you want to be ranting around.
An automatic trigger is a good idea if you are hellbent on dying in a blaze of glory, but this guy seemed more about publicity and streaming. Also probably realized late in the game he wasn’t blowing up anything more than his own ass.
“On Thursday, authorities said Thursday they didn’t yet know Roseberry’s motive. They said they had no indication he acted with anyone else, and said they had learned from interviews with family members, his mother had recently died and that there were other unspecified “issues he was dealing with.””