Sergeant John P. Dimuccio distinguished himself by heroism involving voluntary risk of life at Interstate Highway 880, Oakland, California, from 18 to 22 October 1989.  During this period, Sergeant Dimuccio searched and recovered earthquake victims trapped between the collapsed highway system.  With complete disregard for his own safety, Sergeant Dimuccio entered the devastated highway system without hesitation, despite the hazard of being crushed by one of the estimated 2,000 aftershocks, and persevered in his humanitarian efforts until his mission was accomplished.  By his courageous action and humanitarian regard for his fellowman, Sergeant Dimuccio has reflected great credit upon himself and the United States Air Force.