During the night of December 2 and early morning of December 3, 1968, Kerry was in charge of a small boat operating near a peninsula north of Cam Ranh Bay together with a Swift boat (PCF-60). According to Kerry and the two crewmen who accompanied him that night, Patrick Runyon and William Zaladonis, they surprised a group of Vietnamese men unloading sampans at a river crossing, who began running and failed to obey an order to stop. As the men fled, Kerry and his crew opened fire on the sampans and destroyed them, then rapidly left. During this encounter, Kerry received a shrapnel wound in the left arm above the elbow. It was for this injury that Kerry received his first Purple Heart Medal.