For those interested, you can go to YouTube and search for “quadcopter drone swarm” and get a scary eye full.
“The specifics of what the mini-drones can do are classified.......”
The fact that this story was even published tells the world that we have them and that they can do likewise. WHENEVER we have exceptional or specialized weaponry, keep that information under your belt, you may need to use such weaponry some time, ANY advantage is a good advantage. Yes, we do have stupid people in government.