In 1965, Komarov worked with Yuri Gagarin in supervising preparations for the flight of Voskhod 2, which carried out the first attempt of an extravehicular activity in outer space. These preparations included fitting of space suits on the cosmonauts and briefings for the spaceflight. In April of that year, Komarov toured Leningrad with Kamanin, Gagarin, Gherman Titov, Belyayev, and Leonov. Komarov also visited Petropavlovsk Fortress with Valentin Glushko where Glushko had conducted early rocket experiments in the early 1930s. In September that year, Komarov toured West Germany.