What might have happened to the Titanic exploration sub?

The search continues for a submersible that disappeared on a trip to view the wreckage of the Titanic. Five people are on board. The Coast Guard in Boston says the sub lost contact Sunday, about an hour and 45 minutes into its dive. Butch Hendrick is the president and founder of Lifeguard Systems, which conducts dive training for public safety officers. He joined CBS News to talk about the search. #news #titanic #submersible CBS News Streaming Network is the premier 24/7 anchored streaming news service from CBS News and Stations, available free to everyone with access to the Internet. The CBS News Streaming Network is your destination for breaking news, live events and original reporting locally, nationally and around the globe. Launched in November 2014 as CBSN, the CBS News Streaming Network is available live in 91 countries and on 30 digital platforms and apps, as well as on and Paramount . Subscribe to the CBS News YouTube channel: Watch CBS News: Download the CBS News app: Follow CBS News on Instagram: Like CBS News on Facebook: Follow CBS News on Twitter: Subscribe to our newsletters: Try Paramount free: For video licensing inquiries, contact: licensing@