The quote (whoever made it) came when the question was asked as to what the purpose of the drones could be, and someone posted check out the Old Crows. I think I had to go back to World War II to get the beginnings of it, but it was SIGINT. I started searching UAVs (the platform) until I came across a SIGINT program using UAVs, and it was detailed in a conference. I was surprised that the entire presentation was on their website, because you had to have security clearance to attend the conference. It went into great detail what Project Forester and Project Oracles were. It can definitely track humans in heavy underbrush.
The reason this really caught my eye was back in the early 90's (back to the thrilling days of yesteryear - the Lone Ranger), there were a set of circumstances surrounding a planned red flag event: a staged ET landing in New Mexico. UN military was seen and photographed on rail cars coming out of Canada heading south to California. One of the soldiers stationed at 29 Palms (near Palm Springs) was a member of the BBS I belonged to back then (before the Internet), and I met him and talked to him. He informed us that at this time he and his unit had been given a questionaire, and one of the questions was "if you were given a direct order to go house to house and disarm the American public, would you do so". He said an overwhelming majority said no. I think that pretty much derailed this planned event, because it seemed the intent was to declare martial law and control the masses for whatever reason. Those type of things don't go away, they just get re-thought out and a different angle is used.
California seems to be the place they want to control the most, for whatever reason, or maybe it's just that that is all that I have seen, or heard.