https://globe.adsbexchange.com/?icao=ae094b Ive seen this flight pattern quite extensively over the last 3-4 months, this time its a UNK, when the last 12 times ive seen this flight level, its U-2's that are doing Test Flights and Certification Flights for their recent upgrades and refits they are currently getting. https://www.thedrive.com/the-war-zo...ities-in-first-ever-in-flight-software-update https://www.c4isrnet.com/air/2020/1...-its-oldest-aircraft-while-it-was-in-the-air/
