The government has refused to open its files about what, if anything, moved across the sky and crashed in the woods near Kecksburg, Pa., 40 miles southeast of Pittsburgh.
Traffic was tied up in the area as curiosity seekers drove to the area, only to be kept away from the crash site by soldiers.
The Air Force's explanation for the unidentified flying object: a meteor or meteors.
Eyewitnesses said a flatbed truck drove away a large object shaped like an acorn and about the size of a Volkswagen bus. A mock-up based on the descriptions of local residents sits behind the Kecksburg Volunteer Fire Department.