Been watching this for a while actually. There's a site that tracks temporary flight restrictions in near real time and some of the Nevada ones pop up with no NOTAM explanation beyond "security" which tells you absolutely nothing.
What gets me is the timing. A few of them last only a few hours, overnight. Not long enough for a standard military exercise usually. And the coordinates don't always line up with anything known on the map.
Glastonbury is a long way from Nevada obviously but I've been following the Nevada stuff since reading about the Bob Lazar claims years back. Once you start looking at how much airspace gets quietly locked down out there it does make you wonder what they're actually moving around or testing.
Anyone got a good source for archiving these before they disappear? I feel like building up a proper record over time would be more useful than looking at them one by one.