According to an aspect of the invention, there is provided a laser weapon system, comprising: one or more lasers for generating electromagnetic radiation; laser optics for routing the electromagnetic radiation to laser apertures in the platform which direct the generated electromagnetic radiation at a target, the laser apertures having an associated field of regard; and a control system, the control system being arranged to control which combination of laser, laser optics and laser aperture is used to engage the target, based on a probability of successfully engaging that target in relation to the field of regard of the laser aperture of the combination.