The Coast Guard said Wednesday it is bringing in more ships and underwater vessels to search for a submersible missing in the North Atlantic after detecting underwater sounds, including banging noises, that provided a glimmer of hope three days after the Titan disappeared while bringing five people down to the wreck of the Titanic. The exact location and source of the sounds was not yet determined, but it allowed searchers to focus on a more narrowly defined area. The full scope of the search was twice the size of Connecticut and 2 1/2 miles deep, said Captain Jamie Frederick of the First Coast Guard District. READ MORE: https://www.10tv.com/article/news/nation-world/canadian-aircraft-underwater-noises-titanic-sub-search/507-e1f2f227-552a-49e3-9690-d93853da6e6b