I find the story implausible. I cannot believe the FBI would close the facility, send crews up on antennae and towers, even bring in a military helicopter, because a janitor made strange and ambiguous, albeit threatening, comments.

How was this dude a threat after they seized his laptop? Was he not in jail?

Neither do I believe the closure of the Post Office was unrelated. There were several webcams aimed at the sun that simultaneously went down with the Sunspot observatory.

Sure, I can see they might have felt it advisable to bring in a Blackhawk to circle the facility to facilitate the arrest. I don't see why they'd close it down after they made the arrest though, and neither do I buy the coincidence gambit for the closure of the Post Office, or the webcams that went black.

IMHO, this is a cover story for something else that is, or was, happening.

Thanks!