Pretty impressive. I've also heard that it can run vibration data with on board sensors, so no ATABS gear.
http://m.cnet.com/photos/photos-armys-black-hawk-now-flies-digital-skies/6219628?ds=1
Not sure of the status of the Sierra, but pretty much every Romeo has that capability now, as well. HIT checks are all done in the computer, too, and are relatively easier because you don't have to be at a set altitude (though you do have to wait for 30 seconds for each engine).