Past NASA astronaut who commanded Gemini 4, the objective on which the very first spacewalk was conducted. He graduated 1st in his course in the University or college of Michigan, where he received his B.S. in aeronautical executive. He continued missions for both Gemini and Apollo applications. He previously four children along with his 1st wife, and obtained two step-children when he remarried. He flew on Gemini 4 with astronaut Edward H. White colored, who conducted the very first spacewalk.