While onlookers chant praises, this masked insurgent is launching mortar shots at American troops. Mortar tracking technology can track the trajectory of a hostile round and fire a retaliatory shot to the exact spot where the hostile shell was fired. The effects are usually pretty final. This only requires the hostile mortar to fire 2 to 3 rounds. Count the number of mortar rounds the masked insurgent fires. Source: Anonymous. Location: Unknown.