CNN CNN Tonight June 4, 2024 06:45:00
>> we always understood that was the wrong material for submersible holes because with each progressive cycle you can have damage so it's quite insidious because you may have a number of successful dives which is what happened here and then have it fail later. >> sub implosions are rare and when they happen there almost always catastrophic. an american nuclear sub, the u.s. thresher imploded off cape cod in 1963 with the loss of all 129 souls on board. the tight end would have imploded in a fraction of a millisecond. those inside would not have known what happened. >> at that plexiglass viewin...