The Fortress
S3, E12: Scott's group comes upon an old Robotech facility converted into an Invid outpost and devises a plan of attack using bombs covertly planted by Rand and Annie to signal a full-scale assault.

S3, E12: Scott's group comes upon an old Robotech facility converted into an Invid outpost and devises a plan of attack using bombs covertly planted by Rand and Annie to signal a full-scale assault.