Hint 0. Rivets. The MiG-25 has A LOT of them
Hint 1. Is it a bird? is it a superbird? MiG-25 is called the FOX BAT is it a fox? is it a bat?
2nd Hint: Picture of the AF the Mig-25RB had cameras installed for recon
3rd Hint: Cube. Well its a mig. shaped like a brick
4th hint: Acrobatics? Yeah sure that dont fit.
5th Hint: Introduced in 1970s
6th Hint: Had a film and broke the record for altitude under its own power in 1977
I think I know what it is. MiG-25 Foxbat.
It was introduced in 1970, there was a film in 1977 called Foxbat... Is it a bird? no no no... Is it a bat? and a fox? I THINK THIS MIGHT BE IT!
Edit: The hint with the picture of the airfield. The MiG-25RB had cameras installed https://upload.wikimedia.org/wikipedia/commons/a/a9/MiG-25RB_cams.jpg