Just days before the D-Day invasion, U.S. Navy Captain Daniel Gallery and his team captured a Nazi submarine in the eastern Atlantic. The operation uncovered a trove of vital intelligence. Charles Lachman, author of "Codename Nemo: The Hunt for a Nazi U-Boat and the Elusive Enigma Machine" and executive producer of "Inside Edition," joins "CBS Mornings" to talk about Operation Nemo and how the course of World War II was changed.
