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It's called plane s plo it. is that what's going on here? we don't no. but it's something that obviously you got to take a look at. >> it makes you think the more connected we are, the more vulnerable we are. we talk about this in less severe issues when it comes to shopping on-line, yet when you talk about security and all that's available, it's an obvious question. >> look at that computer simulator in the guy's house. >> he made it himself. >> yeah. >> by the way, if you enjoy keeping your phone on, if this is a workable and conceivable idea, forget it. they might even take them away. meanw...

Minute. at this point, the airplane would easily befalling apart. >> that's the problem, micayla, when you try to replicate this information, this airplane is falling faster than many people think is physically possible. it wouldn't hold together. it wouldn't hold together. it literally would befalling apart in the air and the passengers, many of them could be unconscious. we are going to try to level off. which is something else that the aircraft reportedly did. again, it's not easy. you can hear all the alarms from the aircraft itself. this is another example of you take the information that...

Water. u.s. army corps of engineers is front and center when flooding strikes. that's only part of its mission. casey why nan reports it's having to do it all with less. >> reporter: for years this is how the army corps of engineers researched the impacts of flooding in the mississippi river delta, models built to scale to see what would happen, for example, if a barge tried to pass through flood gates. now it's using high-tech tools such as this computer simulator providing a realistic river boat pilot's view. >> by far the biggest change is we've gone from the types of models you see here to...

-- captions by vitac -- www.vitac.com hello. you're in the cnn newsroom this saturday, may 14th, i'm fredricka whitfield. saving two of louisiana's biggest cities at the sacrifice of flooding homes and farmland. that's what will likely happen as the u.s. army corps of engineers opens the morganza spillway beginning an hour from now. while opening the gaelts would slowly divert floodwaters from baton rouge and new orleans, areas in yellow could get up to 20 feet of water, in green up to 15 feet. the morganza spillway hasn't been opened in nearly 40 years. but for the u.s. army corps...

Engineers built an extensive system of levees to try to minimize that damage. that's not all they do. for years, this is how the army corps of engineers researched the impacts of flooding in the mississippi river delta. models built to scale to see what would happen if a barge tried to pass through flood gates. now it is using high-tech tools such as this computer simulator providing a realistic riverboat pilot's view. by far the biggest change has been that we have gone from the types of models that you see here to a combination of computer models and physical models of this type. >> reporter...