A variety of commercial and military operations involve the laser illumination of a satellite, missile, or launch vehicle from an Earth-based site. Such an illumination, known as a lasing, may be used to provide precise range information or carry out data transfers to other satellites or ground facilities. Yet, the lasing can pose a serious threat to other satellites. For example, sensitive satellite sensors can be damaged or even destroyed if illuminated by accident. Use the LaserCAT tool to assess the potential of an unintended illumination of a satellite during a given lasing run or within a given lasing window.