 Sitzman and Zapruder climbed on top of the 4-foot (1.2 m) high pedestal.While Sitzman stood behind Zapruder and held his coat to steady him, he began filming the presidential motorcade as it turned on Houston Street onto Elm Street.The fatal head shot struck President Kennedy as his limousine passed almost directly in front of their position, 65 feet (20 m) from the center of Elm Street.