Sergeant Jennings received a wound in the left knee when the patrol was ambushed by rocket-propelled grenade and small arms fire. Despite his wound, he continued to provide aid to the mortally wounded patrol leader and the radio operator. After providing first aid and calling for a medical evacuation, he continued to engage and eliminated two enemy with precision fire from an overwatch position. Despite the shrapnel wound to his knee, he completed a foot movement to a distant intersection where the patrol was again ambushed by small arms fire. He provided fire in support of the patrol and fatally wounded another insurgent with his sniper rifle. During a lull in the fighting, he removed the shrapnel from his knee with his knife and ignored medical attention in order to support the patrol. On 17 November, he fought between posts at the Al Anbar Provincial Government Center helping thwart an attack by the enemy, firing 200 rounds from a squad automatic weapon over the government center wall to cover a blind spot being exploited by insurgents.