The President of the United States of America, authorized by Act of Congress, July 2, 1926, takes pleasure in presenting a Second Bronze Oak Leaf Cluster in lieu of a Third Award of the Distinguished Flying Cross to Warrant Officer One (WO-1) Donald E. Williams, United States Army, for heroism while participating in aerial flight evidenced by voluntary actions above and beyond the call of duty, while serving with the 191st Assault Helicopter Company, in action on 1 June 1968, in the Republic of Vietnam. Warrant Officer Williams distinguished himself by exceptionally valorous actions while serving as aircraft commander of a UH-1D helicopter engaged in combat assault operations near Tan An. On both lifts of a two lift insertion conducted in total darkness, his aircraft came under extremely intense enemy automatic weapons and RPG fire. The landing zone was covered with brush six to eight feet high, requiring that the aircraft be terminated to a hover, a position vulnerable to murderous enemy fire. Once clear of the landing zone on the final lift, he received a call for emergency med-evac and resupply into the same area. Again his aircraft came under a barrage of machine gun and RPG fire, as he landed in total darkness. With the supplies unloaded, it was discovered that the enemy fire was too intense for wounded to be moved to his location and he was forced to depart. Nevertheless, he contributed immeasurably to the success of the mission. His actions were in keeping with the highest traditions of the military service and reflect great credit upon himself, his unit, and the United States Army.