Bunker Busters

The bunker buster missile upgrade is for the stealth fighter. This upgrade was made available later in the conflict, following the vast deployment of GLA Tunnel Networks. Once purchased from the air field, the missiles from the Stealth Fighter will release a mid-sized blast when it hits the ground. It is made to clear out buildings the have troops in 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).

Counters
If the general is quick reflexed, he can empty the tunnel networt before the blast. Same thing with all civilian buildings. The blast has a 3 second delay from when the missle hit the grountd to when it explodes.