EE WAS ASSIGNED TO REMOVE A DEFECTIVE PINTLE HITCH FROM THE BACK END OF 5540 PITMAN. HE WAS UNDER THE BED OF THE PITMAN TO CUT THE BOLTS OFF AND STOOD UP BEFORE COMING ALL OF THE WAY OUT FROM UNDER THE TRUCK BED, STRIKING HIS RIGHT SHOULDER ON THE BED. HE WAS EVALUATED BY A PHYSICIAN AND PHYSICAL THERAPY STARTED ON 5-6-02.