Smart Rocks (?)
Don't you hate it when you find a video that's intriguing, and you'd like to learn more, but you can't find any info about it anywhere? Well, here's some more of that.
From what I've gleaned from google, these are "smart rocks" from Reagan-era Star Wars research. These are test videos of smallish (basketball sized?) rocket powered things that hover around a bit and do some maneuvers. One of them, the Boeing ACAT, looks like it was retrofitted for planetary exploration. It lands and poops out a robotic hexapod that walks away. (More info at Chronology of Missile Defense Tests.)