there's a pair of robots -- these are rescue robots. we're talking about what could help out in a crisis scenario in this country. these are it. the hrp 2 and one called the kai and these both. the kai and the jackson. they'll go into, say, an earthquake scenario or an area that has had an explosion happen. they will go through the debris and actually can get to -- go through chemicals, can make the path for first responders and extinguish fires. >> at the same time, can they bring them back? >> not those. i don't know if they collect data for that. i imagine they have that kind of sensor for this. >> and there's other ones we're going to put online that are phenomenal that actually one controversial being tested now in silicon valley that will -- that's out on the street. called a k-5. it's really taking in some data and patrolling streets.