Remember talking to an old Cold war FR pilot at a funeral, who told me one day he was so low, as he zoomed over an irate German farmer, he picked up a shovel and threw it at him.
It hit the leading edge of his wing.
When I asked him if maybe he'd been a little low, he said that it was at the height of the Cold War, and they were training for the real thing, which could have happened any day.