The DOD is testing a swarm of autonomous, 3-D printed drones

[Bayard]

2. Yikes

Sounds a lot like the Michael Crichton book, "Prey", :

In the Nevada desert, an experiment has gone horribly wrong. A cloud of nanoparticles—micro-robots—has escaped from the laboratory. This cloud is self-sustaining and self-reproducing. It is intelligent and learns from experience. For all practical purposes, it is alive. It has been programmed as a predator. It is evolving swiftly, becoming more deadly with each passing hour. Every attempt to destroy it has failed.

And we are the prey."