A countermeasure's a system (usually for a military application) designed to prevent sensor-based weapons from acquiring and/or destroying a target. Countermeasures that alter the electromagnetic, acoustic or other signature(s) of a target thereby altering the tracking and sensing behavior of an incoming threat (for example, guided missile) are designated softkill measures. Measures that physically counterattack an incoming threat thereby destroying/altering its payload/warhead in such a way t… (More on Countermeasure)