Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Alekseyev I-212 -  The Alekseyev I-212 was a twin-engined jet fighter designed in the USSR in 1947 by Experimental Design Bureau 21 (OKB). It was a two-seat variant of the I-21 (Istrebitel' - Fighter) that had been designed in response to a requirement for a very long-range fighter issued by the Soviet Air Forces in 1946. Intended as an escort fighter it was also designed for use as a night fighter and reconnaissance aircraft.
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