the system is using. a signal, a sound comes off the bottom of the boat or a buoy or something towed behind doesn't really matter. if it finds something on the sea floor, it will echo that back. kind of like the way a bat will see things will see bugs. it's that echo location here. that's the same thing we're seeing here. there's the echo location of the ship and that's what the ship at the surface would look like. not recognizable as a boat or plane or wing but certainly something not a flat piece of the ocean. that's one good news here. one good thing, we don't have rough terrain at the bottom it's pretty flat. when we do find the ship it will show up quite rapidly. >> miles, i want to ask you a question about the weather that caught our eyes. there was a report in the "wall street journal" that says airasia pilots until this weekend they assessed their own weather situation before takeoff. the pilots made their own call based on whether they would fly. that doesn't happen in the united states with u.s. and european carriers and special