The Missile Warning System (MWS) cannot distinguish between enemy and friendly missiles or air launched missiles from ground launched missiles. As such, you may receive launch indications from both friendly and ground units.
When a laser illumination on the aircraft is detected, an “L” is displayed along the azimuth the laser was detected. The symbol will continue to appear as long as the laser illumination is detected.
Read page 410 of the A-10C Warthog flight manual :thumbup: