A McDonald’s customer thought his friend was joking when he pointed out alleged UnitedHealthcare CEO killer Luigi Mangione at the fast food joint on Dec. 9 — but it ultimately turned out to be the shooting suspect, he said. The man, identified only as Larry by Fox News, and a group of pals went for their meal at the McDonalds in Altoona, Penn., when one of them noticed a man in the restaurant who looked suspiciously familiar to the gunman who executed executive Brian Thompson in New York City.