dana: the search for brian laundrie. police and f.b.i. using sonar equipment and dive teams to find him in the carleton reserve in florida. f.b.i. calling him a person of interest as they investigate gabby petito s death. we re live in florida with more. investigators are resuming the search for brian laundrie in the carlton reserve. live aerial pictures of the reserve. it s a 25,000 acre expansive mostly swampy nature park. there are alligators and snakes and ecotour guide with experience in that area says with the proper skills, someone like brian laundrie would be able to survive an extended stay. take a listen. if they know what they re doing it s easy. right now there is plenty of water and fish to eat. if you know your wildedibles