If the image was taken from space, you cannot notice altitude (echelon) gap between the planes. Shadows could help, but we see only one on that image.
Actually many aircraft along with other nationalities aircraft have been used as aggressors/defenders. There are yearly meets between different host countries where pilots and machines take on different roles for different types of missions, with different mission criteria: (which often dictates that one side will win--for training purposes.) Everything from the Su30MK/MK-I and the majority of all prior designs has played both roles as aggressors/defender. Sometimes AWST (aviation week and space technology) cover some of the international events.
COMMANDER: Gunner, load 90 mm. GUNNER: Erm, we're fresh out of 90 mm ... but I've found this 92 mm in the turret ... COMMANDER: Ya okay, whatever. Load 92 mm. GUNNER: Alrighty then ...
Russians, to avoid such problems, build larger calibers to be able to fire anything that may be encountered in the turret: And see that muzzle attachment? -- Exactly to prevent pictured above %)
i'm not sure about that. did u see the mispelled "UNCLES" on it? he probalby tried to fire the gun using some russian manual for the stuff vadim posted
http://forum.wbfree.net/forums/showpost.php?p=552098&postcount=535 how is germany getting plastered by B-17s rare?