desperate hours in the search for the missing titanic sub. still no sign of the craft as oxygen quickly runs out. plus a deadly tornado strike, three people killed in north texas, the state s second fatal storm in less than a week. and president biden is welcoming narendra modi for a state dinner even though some of his policies may be a little tough to swallow. welcome to our viewers in the united states and around the world. i m christine romans. we begin with just hours remaining until the air runs out on that titan submersible. the sub went missing sunday morning less than two hours after its launch to tour the rec of the titan . they had a 96 hour supply of oxygen and that is due to run out this morning. if they are still alive, and we re looking at dwindling oxygen, that the decrease in oxygen getting to the brain and that increase in carbon dioxide is a very panicky situation. you feel your world closing in. paula newton is live in halifax. what is going o
first and most urgent task at hand is to find the missing titan submersible, but how to get to it when found is another question. while rescue would be challenging, it is not unheard of. tom foreman has more. reporter: racing time, the elements and an ocean of unknowns, those trying to find the titan dwindling odds of success. underwater rescues are inherently complicated, dangerous and the team sea makes it all harder. this author knows. hard to imagine two miles of water above you, the immense darkness, no natural light. the weight of that, a crushing weight. so you are operating in pitch darkness at a depth that many things will feel. reporter: his book is about the deepest ocean rescue to at a time. in the early 1970s, the pisces 3
makes it all harder. the author knows. hard to imagine, two miles of water above you. the immense darkness. no natural light. and the weight of that, the crushing weight, crushing weather. you re operating in darkness. reporter: his book the dive is about the deepest ocean rescue to date. in the 1970s, the pisces 3 sank nearly 1,600 feet below the surface while laying an undersea phone cable off the sea of ireland. for three days, vessels struggled to get lines attached and haul up the submersible with its two experienced sailors. finally, success. was there a stage when you began to wonder? no. we had about a day s supply left for our life support and we knew what was going on. we could talk to the surface.