sentences:  The story starts on Earth in the early 21st century, where Mandella and about a hundred other young men and women of especially promising physical and mental capabilities have been drafted into a special force designed to combat the extraterrestrial threat.All soldiers are of genius-level IQ, and most have degrees in advanced subjects, such as Mandella, who was studying to become a Doctor of Physics.The Taurans are at this stage almost fully unknown to humanity, except for the apparently unprovoked destruction of some of the first Earth colonization ships sent to another star system - an act witnessed only by an automated drone probe.