The Buk missile system is a family of self-propelled, medium-range surface-to-air missile systems developed by the former Soviet Union and Russian Federation and designed to engage maneuverable fixed wing aircraft, helicopters, cruise and ballistic missiles. The first version of Buk adopted into service was the 9K37 and it has the NATO reporting name SA-11 Gadfly. Since its initial introduction into service the Buk missile system has been upgraded and refined.Each land-based Buk transporter erector launcher has its own fire control radar. As a result the system is able to engage multiple targets from multiple directions at the same time.Development of the 9K37 Buk was started on the January 17, 1972. Development of the Buk surface-to-air missile was completed in 1979. In addition to the land based missile system a similar system was to be produced for the naval forces, the result being the 3K90 Uragan which carries the NATO reporting name SA-N-12 Gadfly.