Chase cursed, reached down, and activated one of the systems at his belt. He could, if he wished, call up a tactical display of the area as best as they knew it, which would also show the positions of all the members of the company. Each man emitted a low-powered scrambled and coded tactical signal that could be read by the others in the company. Its use was limited by the environment, obstructions, and interference, but the tactical benefits were enormous. It also allowed squad, platoon, and even company commanders to keep separate track of each of their unit's members.