Zeus been hidden by Gaia. Together, Zeus, his brothers and sisters, Hecatonchires and Cyclopes overthrew Cronus and the other Titans, in the combat called the Titanomachy. The defeated Titans were then cast into a shadowy underworld region known as Tartarus. Atlas, one of the titans who fought against Zeus, was punished by having to hold up the sky. After the battle with the Titans, Zeus shared the world with his elder brothers, Poseidon and Hades, by drawing lots: Zeus got the sky and air, Poseidon the waters, and Hades the world of the dead (the underworld). The ancient Earth, Gaia, could
Nike Zeus about the system. In 1963, the United States Secretary of Defense, Robert McNamara, convinced Kennedy to cancel Zeus. McNamara directed its funding towards studies of new ABM concepts being considered by ARPA, selecting the Nike-X concept which addressed Zeus' various problems by using an extremely high-speed missile, Sprint, along with greatly improved radars and computer systems. The Zeus test site built at Kwajalein was briefly used as an anti-satellite weapon. The first known serious study on attacking ballistic missiles with interceptor missiles was carried out by the Army Air Force in 1946, when two contracts were sent out as Project