TYB
02-4452. Known to use a regular airline call sign in the past. 227th SOF. Black spook plane. Bears watching. Looks like they switched off or changed ICAO hex id out there on the western part of the flight. Will dig on this.
https://globe.adsbexchange.com/?icao=ae0449
https://theaviationist.com/2011/05/15/the-white-fest-b757-andrews/
https://theaviationist.com/tag/227th-sof/