Four genetically-enhanced test-tube babies were created by the United Nations Aero-Space Force to be leaders of this project: Cain, Seth, Abel, and Lilith. They aged 1.5 times slower than normal humans. Cain became the Major, Abel became Lieutenant-Colonel and in charge of the management of the security division, Seth was Head of the UN Science Department, and Lilith was a lieutenant, in charge of the Department of Medicine/ Health care. Another 100,000 people, referred to as the colonizers, were sent to Mars to make the planet suitable to sustain human life.