The Cybermen attacked before the rocket was ready, however. When the preparations were finished, the Fourth Doctor asked Chief Councillor Tyrum to delay the launch while he rescued Sarah Jane Smith from the beacon.
When Vorus saw Nerva Beacon was on a collision course with Voga, he launched the rocket, despite having been shot by Tyrum. His dying words were, "My Skystriker, my glory!" Following directions from the Doctor, Captain Stevenson redirected the rocket into the Cyber-ship. (TV: Revenge of the Cybermen)