miss sitzman stood behind mr. zapruder watched the presidential motorcade proceed along elm street , and at the same time maintained a firm hold on mr. zapruders coat to keep him from losing his balance as he filmed his soon-to-be famous 484 frames of history .
miss sitzman stood behind them watched the presidential motorcade proceed along elm street, and at the same time maintained a firm hold on their coat to keep them from losing their balance as they filmed their soon-to-be famous 484 frames of history.