>> and the weather is rough today. that means they can't put the submarine in the water. which is -- i don't know. it works underwater. that's kind of hard to understand. >> well, so like a lot of things, the riskiest time for these types of systems is during launch and during recovery. and the rougher the seria, the higher the sea stake, the more likely for instances, for instance, a collision with a ship. when an auv and slip collide, the ship wins every time. >> i can see that. is there any sub meantry technology that can be used along with this drone submarine that might make the task faster? >> well, there are other types of systems. so what we're doing right now is, we're using the auv as a platform to carry the sonar. it's down there images the bottom. there are deep tow sonar systems that can also do that.