indices and you have very little information about that flight other than what they tell you on their website. >> we're going to check back with our panel in a few moments. let me know what you think. @andersoncooper #ac 360. coming up the search for wreckage on the surface has its own challenge. there's a lot of garbage floating in the ocean, particularly in this new area that they are searching in. and imagine finding anything under the water in total darkness, technology can do it. we're going to look at that next, we're going to get a live demonstration of the sonar pinger. that could lead search teams to the plane's black boxes. you'll hear what they sounds like, see what they look like when they hit the water. we'll have a demonstration ahead. they think salmon and energy. but the energy bp produces up here creates something else as well: jobs all over america. thousands of people here in alaska are working to safely produce more energy. but that's just the start. to produce more from existing wells, we need advanced technology. that means hi-tech jobs in california and colorado.