by Vera H-C Chan A slip, a scary splash, then a scream. It took just seconds for a two-year-old girl to fall 20 feet into New York's East River waters. Many reacted quickly to rescue 2-year-old Bridgette Sheriden , but two men reacted even faster: Bridgette's father David Anderson and a still unknown French tourist who, after helping in the rescue, walked way and took a cab to destinations unknown. Part of the rescue was captured on film by a freelance TV producer,