unmanned vehicle. >> it's a lot of work, it's tedious. they have to keep redoing their mapping and what they're sending the auv down to do because of the fact they don't know what they're looking for. it's sort of go down, maybe tinker again, see what you need to do the next time you send the auv down, so it's a very tedious process. >> good stuff, stephanie. may i ask a question of him and you, the question is, he sort of, you know, touched on it a little bit about your question the bluefin. is that bluefin and are these auvs that temperamental because twice now we've had issues with it. just an educated guess on what kind of glitch the bluefin suffered and how temperamental is it. >> it's important to remember the sonar is just one part of the bluefin. can you speak to that, what the troubles would be potentially? >> that's really what it is, it's a complex system with multiple different components. you have navigation, vehicle control, you have all kinds of