The Soviet Union launches Voskhod 2 on March 18, 1965. Commander Pavel Belyayev and Pilot Alexey Leonov completed 17 orbits and one day and two-plus hours in space. Cosmonaut Leonov is the first man to step outside of a space craft, spending twelve minutes outside the capsule.
Just look at all the service gantry’s around the vehicle! everything from fueling to umbilical connections and ventilation are supported in these structures, which are lowered shortly before launch of any vehicle.
Leonov’s spacewalk almost cost him his life when his suit over expanded in the vacuum of space. He needed to slowly release some oxygen from his suit in order to fit into the spacecraft’s airlock, which caused some minor temporary injures on the Cosmonaut.