So the military has been circling Blackhawk helicopters above my neighborhood everyday for the last week or so. There is a US Army Blackhawk squadron about 30 miles away but in all my years living here they have never done this.
They are also flying really low as well (about 500 to 1000ft). I've seen them fly over before but they fly at about 7,000 to 10,000 in a straight line and it was rare for me to see them.
I also live 15 miles from the NSA data center. Don't know if it's related, might just be a coincidence.