Hill was present along with her friend Mary Moorman across from the grassy knoll, and was one of the very nearest witnesses to the presidential limousine when shots were fired at President Kennedy. Moorman can be seen in the Zapruder film taking pictures, which Hill stated were later taken and bleached out by unknown parties. At Zapruder frame 313, when Kennedy was shot in the head, Hill was only 21 feet (6.4 m) away, leftward, and slightly behind him. In her Warren Commission testimony, she stated that a Secret Service agent told her right after the attack that another Secret Service agent, watching from the courthouse, saw a bullet strike "at my feet" and kick up debris. Hill was also one of several witnesses who stated that at the end of the assassination they saw smoke lingering near the grassy knoll picket fence corner.