- June 9 , 1946. Helsinki, Finland (2)
A glowing body, trailing smoke behind it, was seen heading to the southwest at a low altitude.
- July 10, 1946. Bjorkon, Sweden (2)
A number of people watched as a "projectile trailing luminous smoke" slammed into a beach leaving a yard wide, shallow crater containing a slag-like material, some of it reduced to powder. A newspaper reporter found a cylinder about twenty or thirty meters in diamerter. Military authorities investigated, produced ambiguous results, and finally accused the witnesses of imagining things.
- August 12, 1946. Sweden (2)
A cigar-shaped object, about five feet long and trailing smoke, passed over a small town and then "landed" on a small, uninhabited island.
- March 15, 1951. New Delhi, India
One metallic cigar-shaped with white exhaust which turned black when it accelerated.
- July 19, 1951. Puerto Maldonado, Peru
Domingo Troncoso, customs officer in Puerto Maldonado, in the border of Peru and Bolivia, noticed a big airship shaped object flying low and horizontally in the afternoon, going from right to left. The object left a dense smoke trail, vapor or some similar thick and white substance. It was expelled from the rear end of the object while it flew. That the object was a real and structured machine can be seen by its reflection on the waters of the Madre de Dios river down below. Mr. Troncoso managed to get a camera and could take one good shot of the cigar-shaped object. Photograph published in a newspaper on July 6, 1952.
- October 17, 1952. Oloron, France (1)
In front of the cylinder were about thirty objects resembling puffs of smoke.
- October 27, 1952. Gaillac, France (1)
A Plume of smoke emerged from the upper end.
- October 15, 1957. Foster, Indiana
Pinkish flame from the underside of the craft, changed to blue as it departed.
- April 24, 1964. Socorro, New Mexico
Witness policeman Lonnie Zamora watched object with flame underneath descend toward desert.
- June 2, 1964. Hobbs, NM
Mrs Frank Smith and grandson. Second degree burns and face swelling after close approach by top-shaped object trailing smoke.
- August 3, 1965. Santa Ana, California
Rex Heflin. A fourth photograph shows a smoke ring which the UFO allegedly left when it departed.
- October 24-26, 1967. Moigne Downs, England (1)
Two days later contrail observed in the sky by Angus Brooks, retired flight administrator, former RAF, revealing an object hurtling toward the ground.
- December 20, 1976. Gresham, OR
Large bright object emits a beam of blue light across and then disappears leaving a smoking trail.