The President of the United States of America takes pleasure in presenting the Distinguished Flying Cross to Corporal William O. Brennen (MCSN: 669883), United States Marine Corps, for heroism while participating in aerial flight against the enemy as Radio Operator of an R-4D transport aircraft from 1 December 1950 to 5 December 1950. Corporal Brennen made seventeen landings and take-offs from extremely small and hastily constructed airstrips located at Koto-ri and Hagaru-ri, Korea. A concentration of enemy troops, estimated to number seventy thousand, completely surrounded these airstrips, and at the Koto-ri strip, enemy troops were entrenched within two hundred yards. Despite enemy small arms fire and other hazards, Corporal Brennen, as a member of the crew, made these courageous flights to carry ammunition, food, and medical supplies to the FIRST Marine Division and then to evacuate the wounded to rear areas. His devotion to duty and cool courage in the face of grave danger was in keeping with the highest traditions of the United States Naval Service.