REBOUND Passive Defence System

The is a UNSC vehicle mounted defensive system for defeating LASER guided munitions. Though rarely used in modern combat, due to the low price and small size of the REBOUND System, it is installed on the majority of ground combat vehicles. 
In the event of a LASER lock on the vehicle, it will deploy the emitters, usually placed strategically to defend the vehicle. It will then modulate and adapt the beams to the wavelength of the tracker, which takes between 0.4 and 0.6 seconds and then initate decoy beams, giving the missile alternating and confusing signals, in the hope these will send it off course. In fact, missiles over 200 meters away can be sent straight back to the launcher, resulting in its name.