Secretive Soviet fighter squadrons are interesting but secretive units.

https://www.twz.com/air/f-22s-fly-alongside-migs-to-commemorate-founder-of-americas-secret-soviet-fighter-squadron

The original Soviet fighter squadron operated officially from 1977 to 1990. The aircraft used were MiG-21 and MiG-23. Officially, that unit's last mission was in 1990. But the operation "Constant Peg "was never officially disbanded. And there is data about updated squadrons that operate MiG-29, and there were images on the Internet that some Mi-17 helicopters participated in a military exercise. 

Israeli and USA top secret “ghost squadrons” or flight groups of hostile fighters like MiG-29 are interesting things. The ability to test their own aircraft against real MiGs. And Sukhois, and probably Chinese fighters, should guarantee that the newest aircraft are the best in business. The USA squadron of MiG opponents' location is in AREA-51, as history tells. But the new thing in the saga of those captured fighters is the Israeli top-secret MiG-29 training and test flight program. 

The MiG-29 training and test flight program. Causes thoughts that there are many other things than just test flights where those MiGs can be used. And one of them is the so-called false flag operations. 

https://www.twz.com/air/f-22s-fly-alongside-migs-to-commemorate-founder-of-americas-secret-soviet-fighter-squadron

https://www.twz.com/israels-secretive-mig-29-fulcrum-test-program

That means military actions against enemies and potential enemies using systems that are not officially in the inventory. The top secret duties of the U.S. test pilots are to act as opponents against the new, maybe prototype-level aircraft. One of the things that can guarantee the ghost squadron's ability and position as the opponent in R&D work is that those aircraft can involve state-of-the-art technology that gives the best possible opponent for the next-generation fighters. 

The thing is that those ghost squadrons' missions are secretive. And there is not very much information about the U.S. version operations. But the Israeli version is even more secretive than the U.S. MiG squadron’s operations. The fact is that the jet fighters are not the only flying machines. The ghost squadrons also operate with the Russian cargo planes like An-26 and An-12 transporters. Helicopters, including Mi-17, Mi-24, and various other cargo and attack helicopters. 

There is also the possibility that those helicopters and cargo planes are used for agent retrieval missions for the CIA, and maybe some of those cargo planes are modified for reconnaissance missions. Precise information about those plane types is not possible to get. The Antonov aircraft information is also speculation, because the air charter company in Toronto operates them, there is a possibility that the U.S government also has those aircraft. 

https://theaviationist.com/2024/10/05/rare-us-operated-mi-17-south-carolina/

https://www.twz.com/44661/the-last-time-the-united-states-got-its-hands-on-a-fleet-of-mig-29-fighters

https://www.twz.com/air/f-22s-fly-alongside-migs-to-commemorate-founder-of-americas-secret-soviet-fighter-squadron