PANAMA CITY BEACH — The top of Mark Rush’s head was covered in a cap, keeping the results of a near fatal gunshot wound a tantalizing secret. But when he finally removed the hat Monday afternoon to reveal his skull, there was no trace of the 52 stitches doctors used to sew his scalp back together earlier this month. There was barely even a scar. Rush’s neurologist says the same thing every time the two get together, Rush said: “Damn, you’re lucky.” Rush, 57, was painting a shirt earlier this month when a young man crept onto his property. Rush...