TYB
02-4452 USAF 757 Special Operations/FEST (Foreign Emergency Support Team)
https://globe.adsbexchange.com/?icao=ae0449
United States Air Force Special Operations Command (AFSOC) operates a small number of Boeing C-32B passenger jet aircraft, providing global airlift for U.S. government crisis response activities. These may include U.S. State Department Foreign Emergency Support Teams (FEST), which deploy in response to terrorism incidents around the world. They may also fly in support of CIA Special Activities.
These are highly secretive units, with little information publicly available about their activities. The aircraft have been spotted in a plain white paint scheme, with minimal markings. They appear to change serial numbers many times - no doubt an attempt to keep a low profile.
https://www.shannonwatch.org/content/us-air-force-c-32b-shannon
https://www.americanspecialops.com/usaf-special-operations/aircraft/boeing-c-32b/
Once again a Foreign Emergency Support Team C-32 (B757) with registration 02-4452, belonging to the 227 SOF (Special Operations Flight) based at McGuire AFB, NJ, appeared on both FlightRadar24 and PlaneFinder on arrival to Andrews AFB just before 08.38UTC on May 15. Noteworthy, using LiveATC radio stream on KDCA approach I’ve heard it using an unusual callsign “Jenna 71” being vectored for an ILS approach for RWY 19L at Andrews AFB. The aircraft hasn’t used one of the callsigns used by the 227 SOF (the most usual of which is “Terra”) but “Jenna” or “Jena” that according to some websites should be used by non-FBI aircraft and non-FBI flight crews involved in FBI operations. For instance, another FBI callsign reported to be use by FBI flights is “Ross”.
https://theaviationist.com/2011/05/15/the-white-fest-b757-andrews/