Radio Traffic Andrews AFB with Military and Police Helicopters about "Drones" --- "Could not keep up"

Below is a brief video with radio communications between Andrews Air Force Base (AFB) and both a military helicopter, and a Prince George's County Police Helicopter investigating Drones flying at 600 feet and at 900 feet.

What is astonishing to most, is that the police Helicopter finally reported that when they got within a mile of one of the drones, it accelerated away and the police helicopter "could not keep up (with it)."