 When the Chevrolet passed through Ulster County on the Thruway in the early afternoon, Robert Bowerman asked the deputies to stop the vehicle again.The sequence of what happened next became the source of considerable dispute over the next three decades in three trials, numerous appeals, the polygraph tests McGivern passed, news coverage and controversy surrounding the grant of executive clemency.Deputy Sheriff William Fitzgerald and the prisoner Robert Bowerman were shot to death inside the car at Milepost 67.4.