Seems significantly more likely than what was claimed in the original story:

1. The NSA using monitoring technology against civilians in the country, against their charter. 2. County sheriffs deputies who are members of the Joint Terrorism Task Force obtaining this classified information from the NSA 3. Aforementioned county sheriffs accidentally divulging said classified data

I'd listen to an argument that points 1 or 3 occurred. Point 2? Way more likely that somebody read facebook than interagency communication of classified data from a classified program to a local law enforcement officer with no security clearance.

That's just one public post he found. There may be others. Overall, the theory that overzealous local police are monitoring local citizens' social media posts is much more plausible than what's been reported.

Remember that most Google searches are encrypted these days, plus it would be profoundly stupid for the NSA/FBI to reveal a program targeting citizens by rolling trucks to their doors at the mere mention of "pressure cooker backpack".