Robert Aime Maheu, CIA's 'domestic assassination specialist.'

And there was, (the late) Bob Maheu's answer to President Lyndon Johnson's super-secret Executive Investigation, (of the 'assassination' of President John Fitzgerald Kennedy), which would focus on the role of Maheu in the plot... Assassin Maheu here threatened President Johnson's two-year-old granddaughter, (and in writing?!).