Samuel “Skinny” M. Holland worked for the Union Terminal Railroad as a Signal supervisor for railroad track and track signals. Mr. Holland watched the motorcade of President John F. Kennedy from the overpass in Dealey Plaza in Dallas, Texas. He said when Kennedy was shot he saw a puff of gunsmoke under the branches of a tree on the grassy knoll. ”There was definitively a shot fired from behind that picket fence, and I can’t see how they could doubt that a 4th shot was fired I saw the smoke and heard the report from behind that fence..I was on the spot“….