You are there, standing with Edward R. Murrow on a London rooftop as he delivers a live radio report during World War II and going undercover with Nellie Bly as she exposes horrendous conditions in a 19th century insane asylum. Some of the most dramatic events in journalism history are recreated in 'I-Witness: A 4-D Time Travel Adventure,' where a 3-D film and fourth-dimension special effects take visitors on a journalistic trip through time.