When I lived in Northern Virginia I saw a lot of helicopters flying over my apartment building, and not just the usual news and police helicopters. More than on

When I lived in Northern Virginia I saw a lot of helicopters flying over my apartment building, and not just the usual news and police helicopters. More than once I saw 4 uh-60s flying over in formation, and some uh-60s and uh-72s with a distinctive black and gold stripe color scheme. I did some research online and found that there were people in this region fascinated with identifying and cataloguing all of these aircraft, almost like bird watching. I found out they were likely stationed at the Pentagon. The black and gold ones are VIP transport helicopters, meant for transporting members of congress and cabinet members, particularly for evacuations in an emergency. I also saw marine one a couple times, though since it was alone I believe it didn't have POTUS in it at the time (when POTUS is actually in there they fly several identical helicopters in formation so you don't know which has the president). My apartment was roughly under the direct route between Andrews AB and DC, and pretty close to the pentagon, my guess is it was a convenient route for training and drilling.