never seen before. also, vladimir putin's words, on paving the way for civil war. let us know what you think. coming up next, david gallo shows us the amazing look of what the ocean floor looks like. two underwater sonar devices and the remarkable pictures the machines can take. and later this. 797, over on the -- may day, going down. >> we're going to show you what begins as a disaster becomes an opportunity. air crashes over the years that have made air crashes today so rare. lessons that have been learned and what is being learned this time when we continue. it's built to be as fast o as it is strongadvil. and fights pain at the site of inflammation. and made for people like paul, who believe nothing should stop