In 2001, the improved TOS-1A system entered service. The improved system's range has been extended to 6 kilometers and its ballistic computer has been upgraded. The nickname Buratino originates with the name of the hero of a Russian retelling of the Pinocchio tale (by Alexey Tolstoy), given the perception of the big "nose" of the launcher. TOS-1A "Solntsepyok" (Russian: Солнцепёк, English: Blazing sun or Sunheat) system consists of the following items: 1) The "combat vehicle" BM-1 (rus. Боевая машина) (Ob.634B) based on a modified T-72A chassis and fitted with a rotating launch system for 24 unguided thermobaric rockets. All rockets can be launched within 6 to 12 seconds. The launch vehicle is equipped with a fire control system with a ballistic computer, aiming sight and 1D14 laser range finder. The other standard equipment consists of a TKN-3A sight for the commander, a GPK-59 navigation system, an R-163-50U radio station, an R-174 intercom and a 902G smoke gre