BOSTON — The U.S. Coast Guard, U.S. Navy, Canadian Coast Guard and OceanGate Expeditions have established a unified command to continue the search and rescue efforts to the 21-foot submarine research Titan, from the Research Vessel Polar Prince that went missing near Titanic, Sunday evening. As of Tuesday morning, a total of 10,000 square miles have been Leer másUnified Command for rescue of missing submarine near Titanic[…]