May I highly suggest
Linka
for your soviet screen images; just use "concept" and you can find links to download HI RES (1.2+ MB JPG) images of the following:
An artist's concept of Gruman Aerospace Corporation's proposed advanced tactical fighter (ATF). (Released to Public) Date Shot: 1 Jan 1986
Best part is; since theyr'e DoD pictures, they are 100% royalty free
A artist's concept of Soviet surface-to-air laser weapons. Photo courtesy of Soviet Military Power Magazine (Released to Public)