show @thelead. you can listen to the lead once you get your podcasts, all two hours, just sitting there like a delicious tray of sushi. our coverage continues now with mr. alex marquardt who is in for wolf blitzer in a place i like to call the situation room. i ll see you tomorrow. happening now, a desperate search and rescue mission. thousands of feet below the surface of the atlantic ocean. submersible operated by a company running expeditions to the wreck of the titanic is now missing. we have up-to-the-minute details on the mission to find the sub and the five people on board. also this hour, the high-stakes meeting of the super power secretary of state antony blinken says the u.s. and china have made progress towards getting relations back on track, but there still is a ways to go. we ll have a report from beijing. and more than 50 million people across the southeast face the threat of severe weather including tornados this holiday weekend. we ll have the latest