Yakovlev Yak-7, at the Aviation Nation Air Show 2012, Nellis AFB.
Yakovlev Yak-7 was developed from the earlier Yak-1 fighter, initially as a trainer but converted into a "heavy" fighter. As both a fighter and later reverting to its original training role, the Yak-7 proved to be a capable aircraft and was well liked by air crews.
More photos from "Aviation Nation 2012"
Canadian Aviation Blog