Doctor Robotnik needed to transport a new thruster across the bridge so that it could be flown by helicopter to the Launch Base Zone on the Floating Island, and then installed in his new Death Egg II. A large convoy of Troopers transported the thruster to the bridge, which was guarded by an elite member of Robotnik's Special Badnik Service. Nevertheless, Sonic, Amy Rose, and Johnny Lightfoot managed to destroy both the bridge and the thruster with some explosive charges, delaying the Death Egg's re-launch.