Brian Thompson/UnitedHealthcare In a shocking turn of events, Brian Thompson, 50—CEO of UnitedHealthcare, was on his way to speak at the company's investor conference at the Manhattan, New York Hilton hotel when a gunman came from behind and fired his gun multiple times, killing him. Thompson was reportedly struck in the back and his calf, leaving the public in disbelief. Law enforcement calls the attack a "targeted" and "planned" attack — the shooter used a gun silencer and