Original: Chris Gibson sighting In late August 1989 , while working as an engineer on the jack-up barge GSF Galveston Key in the North Sea , Chris Gibson and another witness saw an unfamiliar isosceles triangle-shaped delta aircraft , apparently refueling from a KC-135 Stratotanker and accompanied by a pair of F-111 bombers .
Simplified: Aurora sightings In 1989 , a man named Chris Gibson was working on an oil rig when he saw a KC-135 Stratotanker , two F-111 Aardvarks , and a triangle-shaped craft refueling .