A working prototype of a powered exo-skeleton suit.
This stuff already looks way better than that power-loader Sigourney Weaver used in "Aliens." Look for the full-suit mockups near the end of the video.
That was pretty cool.
REalistically this would be great for doing all purpose work on the base and not so much on the battlefield.
The coolness factor (potentially) could be decribed by one "word" HALO