 Course corrections are carried out in 0.2 to 3.0 s. The laser target designation system can also be linked by radio with the vehicle/mortar—and within 5 km of the target—to allow for a mode of operation whereby the laser illumination activates only once the projectile has been launched, and thus limiting the reaction time of the target and alleviating countermeasures such as laser warning devices.Such a setup makes use of the R-107 portable radio transceiver.One of the more unique aspects of the 2S4 is their nuclear capability.