Catching and photographing Military Helos in Washington DC is fairly easy if they cooperate, and you know where to go. Hains Point is probably the best place by far. Here a few from a 2.5hr stop this afternoon.
12th AVN Based at Nearby Davidson Army Airfiled VH-60M 09-20193
09-20193_3.2.21 by usertim1683, on Flickr
HMX-1 VH-60N 163262 from the Bolling AFB Detachment.
163262_3.2.21 by usertim1683, on Flickr
1st Helicopter Squadron from Andrews AFB. Squadron Commanders Retro Huey 69-6661
69-6661_3.2.21 by usertim1683, on Flickr
69-6661_2_3.2.21 by usertim1683, on Flickr
VX-1 from NAS Patuxent River MH-60S 166336
166336_3.2.21 by usertim1683, on Flickr