A1 Skyraider? That was my squadron. In 1968, VA-25 was the birds sent out on attack runs. But it turned out, the first MIG-21 shot down was by one of our old piston-engined birds. The pilot was just rolling along when a heat-seeking missile flew past him. He looked in the mirror (yes, the old A1 had mirrors), saw the MIG, cut his throttle, threw out the speed brake and went to full flaps, opened his canopy and stuck out an arm and a leg, and produced skidmarks in the sky. He watched the MIG do the same thing. Well, the MIG couldn't go as slow. The MIG flew past our Skyraider, whereupon the pilot closed the speed brake and the flaps, firewalled the engine. and blew him out of the sky.
The A1 ended up being the RESCAP aircraft. No jets seemed able to touch them, but everyone they shot at ended up in the drink.