The Mil Moscow Helicopter Plant is one of the world's leading producers of military and civil helicopters. Khrunichev State Research and Production Space Center produces various space equipment, including modules for space stations Mir, Salyut and the ISS as well as Proton launch vehicles and military ICBMs. Sukhoi, Ilyushin, Mikoyan, Tupolev and Yakovlev aircraft design bureaus also situated in Moscow. NPO Energomash, producing the rocket engines for Russian and American space programs, as well as Lavochkin design bureau, which built fighter planes during WWII, but switched to space probes since the Space Race, are in nearby Khimki, an independent city in Moscow Oblast that have largely been enclosed by Moscow from its sides. Automobile plants ZiL and AZLK, as well as the Voitovich Rail Vehicle plant, are situated in Moscow and Metrovagonmash metro wagon plant is located just outside the city limits. The Poljot Moscow watch factory produces military, professional and sport watches well known in Russia and abroad. Yuri Gagarin in his trip into space used "Shturmanskie" produced by this factory.