the sub vanishing without a trace while exploring the wreckage of the titanic. what the coast guard is saying about multiple underwater noises detected earlier today. and even if the sub is found, is the equipment capable of bringing it to the surface in time? gio benitez in halifax again tonight. the massive explosion in paris. more than two dozen people injured. the building housing the paris american academy, a fashion and design school. the structure partially collapsing. smoke filling city streets. authorities now revealing a possible cause. the deadly heat wave across the south taking the life of a postal worker. record-high temperatures in texas. the heat index nearing 120 degrees. tornado threats from wyoming to texas. rob marciano timing it out. pentagon leak suspect jack teixeira pleading not guilty in federal court today. prosecutors accusing him of accessing highly classified documents, then sharing them with a group on social media, putting many lives at ri
arrived in newfoundland, but it s days away from the search zone. a french ship is expected to arrive tonight, with a deep sea robot equipped with cameras and arms that could free the sub if it was stuck, but it cannot lift it to the surface. tonight, the crew facing dire conditions in that 22-foot-long capsule in the dark with temperatures below freezing. your body will start shivering to generate heat and that will use up more oxygen. so that s not a good thing. reporter: the sub is the only passenger vessel in the world capable of taking a group that size to the titanic, 2.4 miles underwater. mike reiss was on that trip just last year. it s always in the back of your head that this is dangerous and any small problem will turn into a major catastrophe. reporter: the crew on titan expeditions is locked in from the outside with 17 bolts, with no escape hatch. seen here in this cbs sunday morning profile of oceangate