>> i imagine that there is a lot of noise in the ocean. i'm wondering what other natural sounds could be confused for the pinger. >> there are a couple different types of sounds in the ocean, tectonic sounds, whale sounds, that kind of thing. but the processor is able to distinguish the sound the pinger makes. >> this is a tweet from james. if the pinger locater gets a hit, how long does it take to deploy the rest of the technology needed to find flight 370? one australian scientist who developed the flight data recorder said finding them at this point would be "remarkable." would you agree? >> well, if we hear the ping in our system, we're able to put our other system into the water very quickly. so we've got two different types of systems operating off the australian navy ship ocean shield. the first is the pinger locater. the other is the bluefin 21. that can be equipped with a side can sonar or a still camera. we'll put that in the water,