Alex Del Sordo got the call early Tuesday. Del Sordo, owner of the Anchor Bay East Marina in Dundalk, heard an employee’s voice on the other end of the line: “You’ve got to get down here.” The worker, who lives on a houseboat at the marina, was awakened by a roar that sounded like a “rumbling train ripping through town.” It turned out to be the sound of the nearby Francis Scott Key Bridge ...