Zero-X mission leader Captain Black, who ordered the attack on the base, becomes the Mysterons' primary agent when they seize control of his mind during the encounter on Mars.[n 2][25][26] Before the events of the pilot episode, Captain Black held a senior officer rank in Spectrum, an international security organisation inaugurated in 2067[e 3] that mobilises all its personnel, vehicles,[n 3] and other resources in response to the threat posed by the Mysterons. The Spectrum Organisation is directed from Cloudbase, an airborne headquarters stationed at a height of 40,000 feet above the Earth's surface,[e 4] and has a presence in all major cities.