The Mobile Scan Unit or MSU is a tracked vehicle that is mainly stationary. It has a tall Proximity scanner that constantly scans the area for any hostile. If the sensors detect an enemy it can either fire Mortars/Guided Missiles or use it's mounted Heavy Machine Gun. The MSU also has specialized air drones armed with heavy Miniguns will arrive within seconds of an enemy detection. The MSU is invulnerable to even heavy AT Missiles and could only be destroyed by overloading its external power source.