I’m not down in BTV but today the VTang are doing a scenario from 7am-4pm practicing drills on how to handle the BTV airport being attacked. I guess there are pyrotechnics’s there setting up crates that you see at air shows when planes pretend to drop bombs, and the VTang will be scrambling around today so if you listen to the atc link you might here some activity from it. It is sprinkling outside so I’m not sure what they might do to change the drills or if it doesn’t matter. Check it out
Click on the second BTV link not the one with the red writing next to it.