 Complete the following phrase:  Senior guard Lloyd Potolicchio, who had served in the United States Army Air Forces during World War II, resumed his military career after graduation, serving in the United States Air Force and seeing duty during the Korean War. He was killed on January 17, 1966, when the Boeing KC-135 Stratotanker he was aboard collided with a Boeing B-52 Stratofortress it was refueling over the Mediterranean Sea off Palomares, Spain, and crashed. The B-52, carrying four hydrogen bombs, also crashed, resulting in the 