Invasion: Earth
An alien spacecraft plummets to Earth, passing between the twin towers of the World Trade Center and coming to rest in Central Park. Two very different aliens survive, an Oinn and a Blettr, seemingly the bitterest of enemies, one captor, one captive. But when battle fleets from both races converge on Earth, it is discovered that the two races are in league, their plan: to invade Earth.
It is left to Colonel Rob Hayward to plan the defence of the planet, with the Russians his allies against this outside threat.
Harry Harrison
Harry Harrison (born Henry Maxwell Dempsey, 1925–2012) was an American science fiction (SF) author, best known for his character the Stainless Steel Rat and for his novel Make Room! Make Room! (1966). The latter was the rough basis for the motion picture Soylent Green (1973). Harrison was (with Brian Aldiss) the co-president of the Birmingham Science Fiction Group.
Aldiss called him "a constant peer and great family friend". His friend Michael Carroll said, "Imagine Pirates of the Caribbean or Raiders of the Lost Ark, and picture them as science-fiction novels. They're rip-roaring adventures, but they're stories with a lot of heart."