to find anything down there, and whether it can send back pictures that are clear enough. so is there anything out there that can do the job better? rosa flores has the story. reporter: this world war ii era plane crashed off the coast of massachusetts in 1947. for more than 50 years, it remained lost on the bottom of the ocean. over a decade ago, an auv, an autonomous underwater vehicle, discovered the missing plane. coming up. having the right tool is always the best case that you re look for. reporter: hydroid makes the remus family of auvs. this is the remus 600. a larger auv, the remus 6000 found air france flight 447 in 2011. mike mulrooney was a senior field technician on that mission. at the end of the day we knew what we were doing was to try to help people answer questions about what happened to that