A Dalek hunter drone was sent to the Moon of Tenacity during the Last Great Time War to gather information for the Daleks to begin an attack on the Gallifreyan Military Moon Base based on the planetoid. It exterminated Norvid before the Fourth Tamasan destroyed it, although by that time the hunter drone had already broadcast its gathered information to the rest of the Daleks, allowing a Dalek Fleet to begin their attack on the Moon of Tenacity. (AUDIO: The Conscript)