Marcel Muise, National Transportation Safety Board, speaks with Lt. Cmdr. Lars Okmark, U.S. Coast Guard legal counsel, at the Coast Guard Marine Board of Investigation (MBI) hearing into the loss of the Titan submersible in North Charleston, South Carolina, Sept. 19, 2024. The Coast Guard convened an MBI to determine the causes of the Titan submersible's loss, identify contributing factors, and develop safety recommendations to prevent similar incidents. (U.S. Coast Guard photo by Petty Officer 2nd Class Kate Kilroy)