Race Against Time: Search for Missing Titanic Submarine Continues Amid Oxygen Concerns

Two more remotely operated underwater vehicles are searching for the missing Titanic tourist submersible, which was on a dive to the site of the Titanic when it lost contact with its support ship Sunday. The estimated deadline for when the five passengers may have run out of oxygen in the small vessel was 7 a.m. ET Thursday. The accelerating search efforts come as rescue crews are facing wind gusts up to 19 mph and ocean swells up to 5 feet. The cost of the search and rescue mission is likely in the millions of dollars and will fall to taxpayers.