The Bunker Busters upgrade was made available later in the conflict, following the vast deployment of GLA Tunnel Networks. Once purchased from the Airfield, the missiles from the Stealth fighter will release a mid-sized blast when it hits the ground. It is made to clear out buildings that have troops inside them, and also clear out tunnel networks. It can also damage or kill infantry in the range of the blast (more damage is inflicted in the center of the blast). Also, vehicles and other known armor near the missile's hit place will fly off (e.g. Quad cannon, Technical, etc.) but doesn't receive damage when it lands, unlike the Combat Cycle.