US Coast Guard: Missing Titanic tourist sub has less than two days of oxygen left

U.S. Coast Guard Captain Jamie Frederick said the five people on board the missing submersible that was in route to the Titanic shipwreck have approximately 40 hours of oxygen left as of 1 p.m. Tuesday. The 21-foot-long submersible, called Titan, lost communication one hour and 45 minutes after diving into the North Atlantic Ocean Sunday morning.