The Legged Squad Support System (LS3), a/k/a Big Dog, just got better at creeping us out walking around.
it demonstrated new gaits and improved perception of the world around it. But perhaps most importantly, this Big Dog is 10 times quieter than the earlier deafening prototypes, which bounced around unnaturally while emanating a deafening (and position-telegraphing) mechanic roar.
Watch for yourself. See the thing stand up, burst out of bushes, advance in a pair, and stalk a human:
Infocult: charting the end of the human race, one robotic step at a time.