If you were to take all the DRONES in the US, or any country for that matter. Specifically, DJI, Yuneec, and any drone/quad that could carry from one to 16 ounces during flight, then you have a real Quad Force. If these Drones were loaded up with Nitro-Glycerine, and allowed to free fall from altitude, then the resulting explosions could be horrific, to say the least. There are many different types of explosives available now, some may even be more explosive than Nitro. You definitely would want to insure an easy take off and not be around if it failed and came crashing down. RTH would not be an option and therefore eliminated. Could call them Kami Kazee drones. Maybe we should have a few hundred thousand of them ready to be sent to North Korea, be a **** of a lot cheaper than sending planes. Something the military might want to consider. These small drones would be hard to detect by radar especially if they were designed with stealth coverings.