It wasn't a police chopper, it was a military VH-60, also known as a "White Hawk" [1]. It's a VIP transport helicopter, the same type that is used to transport the president.
~The flight track of the helicopter [2] starts at a property in McLean, VA (edited to remove likely inaccurate info)~
The chopper was based out of Fort Belvoir, and based on similar past flight tracks, looks like it probably took off from there too. CNN is reporting that there were 3 soldiers onboard, and no VIPs.
~The flight track of the helicopter [2] starts at a property in McLean, VA (edited to remove likely inaccurate info)~
The chopper was based out of Fort Belvoir, and based on similar past flight tracks, looks like it probably took off from there too. CNN is reporting that there were 3 soldiers onboard, and no VIPs.
1: https://simple.wikipedia.org/wiki/Sikorsky_VH-60N_White_Hawk
2: https://globe.adsbexchange.com/?icao=ae313d&lat=38.952&lon=-...