Lightweight CLU The US Army developed a new CLU as an improvement over the Block I version. The new CLU is 70% smaller, 40% lighter and has a 50% battery life increase. Features of the lightweight CLU are: a long-wave infrared (IR) thermographic camera; a high-definition display with improved resolution; integrated handgrips; a five megapixel color camera; a laser point that can be seen visibly or through IR; a far target locator using GPS, a laser rangefinder, a heading sensor, and modernized electronics.[23] The LWCLU has also demonstrated the ability to fire a FIM-92 Stinger anti-aircraft missile, using its superior optics to identify and destroy small unmanned aerial vehicles (UAVs).[24]