you have walther schwieger returning from his mission, back within radio contact of the german bases and radio stations, that within 200 miles, he sent the telegram announcing, he said, "i have sunk the lusitania with one torpedo." the british admiralty intercepted that message. they knew instantly the implications of it -- what it meant -- and it was that information they were so anxious to suppress. and that's why witnesses, members of the crew, passengers who were determined to get evidence about what they'd really seen and heard that day, they were not allowed to do so. even on the bbc archives, there is reference to the helmsman being taken aside before giving evidence to the official inquiry, and being told that it would be very, in quotes, "helpful" if he would give evidence that there was only one torpedo. he said he wouldn't do that. c-span: anybody alive from the u-boat? >> guest: yes. the u-20 got safely back to germany. but what you have the following year is that that particular u-boat ran aground off sand banks off the coast of denmark. schwieger and his men had to aban