https://globe.adsbexchange.com/?icao=ae54b6 I spotted this RQ-4B Global Hawk lurking the Russian/Bulgarian borders for a good hour. back on November 30th. i have a buddy ( now retired ) who was a USAF RQ-4B Operator and he flipped stuff when he saw that Tail 2049 number since he operated that aircraft hundreds of times.
this might help: https://theaviationist.com/2021/01/...6s-kc-135s-p-8a-and-rq-4b-over-the-black-sea/ the rq4 mentioned is tail no. 2049 i tracked it the other day as well: