The term used in PURSUE Release 05 record DOW-UAP-D101 for the objects observed from an AC-130 gunship during the Gulf of Oman Incident 2021. In infrared imaging a cold signature means the object registers colder than its background, the opposite of the hot signature a propulsion exhaust would produce.
The report describes two objects of approximately four feet in diameter hovering between zero and twenty feet above the water, and approximately twenty-five further instances across the same sortie, all seen as cold orbs in both white-hot and black-hot sensor polarity. Manoeuvring speeds were calculated at between 250 and 1,300 miles per hour, with no means of propulsion observed. The four-foot figure applies only to the first pair; the report gives no size for the other instances and never converts “instances” into a count of objects.
Thermal polarity varies across the record and is worth reading carefully. Release 05 also contains FBI-UAP-D032, in which a special agent using a hand-held thermal device describes two objects as black hot, and FBI-UAP-D033, in which the same or a similar device shows an object presenting as a hot aerial object. The archive uses no standard term for a cold thermal signature beyond this record’s own phrase.
Connections
Gulf of Oman Incident 2021 · PURSUE · Five Observables · Air Force Special Operations Command · FD-302