Did you mean 617, or is this something new to me? 617 hit the three dams in the Ruhr Valley with Barnes Wallis’ goodies. Good observation though, I hadn’t thought of it.
Well, there was an old (B&W) movie called 633 Squadron. I think it was named after a real squadron. They had to fly a canyon to drop bombs under a cliff overhang to cause it to fall and block the opening to an underground NAZI weapons complex. The bombs had to hit just right. And of course there was ack ack guns lining the canyon.
Lucas just modernized it and set it in space.