What is Edward White Jr.'s claim to space-travel fame?

Edward H. White II became America's first spacewalker on the Gemini 4 mission. NASA selected White, an Air Force lieutenant colonel, as an astronaut in 1962. He was pilot on the four-day Gemini 4 mission that began June 3, 1965. The commander was James A. McDivitt. During the first day, White stepped outside the spacecraft for a 21-minute spacewalk during which he maneuvered on the end of a 25-foot lifeline by using a hand-held jet gun. During the remainder of the flight, McDivitt and White completed 12 scientific and medical experiments.

Yes, you are correct Leppi. I can't imagine getting up enough nerve to do that.