<p>The CLU, or command launch unit, is a highly capable thermal optic that can operate independent of the missile system. In Iraq and Afghanistan, we would often carry at least one Javelin on missions, not because we expected to encounter any al-Qaeda tanks, but because the CLU was such an effective tool. We’d use it to watch road intersections and make sure no one was laying down IEDs. The Javelin has a range in excess of a mile, and the CLU is effective at that distance and beyond.</p>