This is the least publicly understood component of the entire system, the key element of the doomsday device, with no reliable information on its existence. Speculation exists that this is a complex system, fully equipped with a variety of communication systems and sensors that control the military situation. This system is believed to be able to track the presence and intensity of communications on military frequencies, and receive telemetric signals from the command posts, measure the level of radiation on the surface and determine intense radiation sources in the vicinity which, combined with the detection of short-term seismic disturbance, signifies a multiple-warhead nuclear strike, and the system may possibly even be able to track people still alive in command posts. The correlation system, after analyzing these factors, may take the final step on launching the missiles.