PERSON@1 sighting In late August NUMBER@1 , while working as an engineer on the jack-up barge GSF LOCATION@1 Key in the LOCATION@2 , PERSON@1 and another witness saw an unfamiliar isosceles triangle-shaped delta aircraft , apparently refueling from a MISC@1 and accompanied by a pair of MISC@2 bombers .

LOCATION@3 sightings In NUMBER@1 , a man named PERSON@1 was working on an oil rig when he saw a MISC@1 , two MISC@3 , and a triangle-shaped craft refueling .
