Coast Guard marine safety engineers assigned to the Marine Safety Center in Washington D.C., working for the Marine Board of Investigation for the Titan submersible case, conduct a survey of the aft titanium endcap from Titan in the North Atlantic Ocean Oct. 1, 2023. The endcap was recently recovered from the seafloor and successfully transferred to a U.S. port for analysis. (Photo courtesy of the U.S. National Transportation Safety Board)