If and when the wreckage of malaysia airlines flight 370 is located, one of the most advanced underwater search vehicles in existence will join the hunt for the flight recorders. cnn's rosa flores is here with more on how that search vehicle works. rosa, this is the thing that would go down and actually pluck the recorders out of the wreckage. >> yeah, i know you and i talked about it off camera because i learned about rovs at the dinner table because my husband is a subsea engineer. >> not many could say that. >> that's how i'm familiar with the vehicles remote operated vehicles and used by t...