Olderendirt nailed it, those blade grips scream Hiller and really stand out. The nose looks Bell-204 the tail seems like a 369 and the gear could be sikorsky. Isn't it funny how the individual designers have a style personality that carries on in future designs, but then the design lines get clouded by incestuous relationships when engineers / designers change companys.
The hills in the background don't look like the central valley even without the smog - Hiller. The background maybe more like Culver city, but I see it's actually the old Berkeley armory.