We've heard a little bit about the FBI and other agencies' use of shell companies to do aircraft runs with Stingray and other surveillance materials - so we know that aircraft are reason for suspicion.

I can't link to proof or evidence (although I'm curious if there's a publicly available list of aircraft around somewhere) but all last summer I've noticed a big increase in the number of planes flying overhead. Even into the winter we've been noticing them, usually small-engine craft flying at low speeds.

Anyone else able to confirm this or offer further info?