In 1965, the first American astronaut to make a spacewalk was Major Edward White II, when he spent 20 minutes outside the Gemini 4 capsule during Earth orbit at an altitude of 120 miles. A tether and 25 foot airline were wrapped in gold tape to form a single, thick cord. He used a hand-held 7.5 pound oxygen jet propulsion gun to maneuver. The launch had taken place a few hours earlier on the same day. During the remainder of the flight, pilot White and his crewmate commander McDivitt completed 12 scientific and medical experiments. The total time in orbit was almost 98 hours, making 62 orbits. Soviet cosmonaut Aleksei A. Leonov, had made the first ever spacewalk for 10 minutes about three months earlier.