Various kinds of small enemy fighter and turret drones despatched in swarms by the target system's security would unleash the occasional stream of fire in the attempt to damage the craft's armor. These could be taken down for points. Also, automated security drones in later levels attempt to shoot down the craft, and must have their cannons disabled in order to proceed with the mission. Enemy bosses occasionally make an appearance, and must also be neutralized to proceed with the mission. Certain system targets on the banks of the trench can be hit in order to procure valuable data, energy or shield power by flying into them.