Michael

1st Lieutenant Robin Bartlett suddenly found himself at the "repo-depo" in Bien Hoa reassigned to the 1st Cavalry Division. The unit had more helicopter support than any other unit in Vietnam. Immediate support from artillery, helicopter gunships, and ARA was only minutes away to support a firefight. Wounded troops could be medevaced even in dense jungle using "jungle penetrators." It also meant that Bartlett's platoon could deploy through helicopter combat assaults into hot LZs (landing zones) at a moment's notice if an enemy force had been spotted. And they did.

In a world devastated by nuclear war with humanity on the edge of extinction, aliens finally make contact. They rescue those humans they can, keeping most survivors in suspended animation while the aliens begin the slow process of rehabilitating the planet. When Lilith Iyapo is "awakened", she finds that she has been chosen to revive her fellow humans in small groups by first preparing them to meet the utterly terrifying aliens, then training them to survive on the wilderness that the planet has become. But the aliens cannot help humanity without altering it forever.