Sighting 4001: The Washington D.C. IncidentArriving At a farm in North central Virginia, Gatlin and Fitz meet Martha Carlyle, a deeply religious woman, who says she saw an alien craft hover over her home and front yard. Martha explains how a robot like creature emerged from the craft and took some soil samples as well as communicated with her, telling her that there was nothing to fear. Nearby, a U.S. Air Force pilot sights a UFO and gives chase until, over Washington D.C., he suddenly plummets to his death. Gatlin and Fitz must comfort his grieving widow and somehow explain what he may have encountered up there. Other sightings investigated include those of a farm family in eastern Kentucky, a truck driver in Charleston, West Virginia and a commercial airline pilot who was flying out of Kansas City.