Constant Peg / 4477th 'Red Eagles' (MiG training, 1977-1988).
documentedmilitary_installationForeign Technology Division
The 4477th TES ('Red Eagles', stood up 1977 at Tonopah Test Range) flew acquired MiG-17/-21/-23 (peak 27 airframes, >15,000 sorties) to TRAIN frontline US pilots; program acknowledged Nov 2006.
The TRAINING arm of the FME apparatus — documented, at Tonopah, on real Soviet aircraft. Part of the full acquire->exploit->train pipeline that makes the FME prior so strong.