This photo is not for NL-12M (MiG-21U) 909 in the foreground, but for the aircraft behind it! This was the best possible photo from accessible areas to document it. 25721 is a RJ-2 reconnaissance aircraft, designated IJ-22 in the Yugoslav Air Force. In 1992 it was transferred to the Serbia-Montenegro Air Force. After phase-out it ended up in the storage area of the Muzej Vazduhoplovstva Beograd where it was first noted in Jun-1997. The fin to the right of it belongs to L-14 (MiG-21PFM) 22735.