Cannot load compress (?) files

Hello, I’m trying to model a simple spaceship. I have found some .blend files form StarWars that I would like to study. But I cannot load them, they appear as e.g. b-wing-v2_compress.blend.
Are there any compress files inside blender ?
Using 2.34
Thanks for advice
François

open with 2.25 save, then open in 2.34