The U.S. Coast Guard is holding a news briefing Tuesday to provide an update on the search for a submersible carrying five people, including British explorer Hamish Harding and Pakistani businessman Shahzada Dawood and his son Suleman, to the wreckage of the Titanic. The Canadian research vessel lost contact with the sub Sunday morning and the Coast Guard is continuing to search for it. The Explorers Club, the family of Shahzada Dawood, and the Coast Guard have all expressed their hope that the submersible is located quickly and the crew is safe.