Halo: The FloodThe Human Covenant War, a desperate struggle for humankind's very survival, has reached its boiling point on the mysterious ring world called Halo. But the fierce Covenant warriors, the mightiest alien military force ever known, are not the only peril. As the fortress world of Reach and its brave defenders were bombarded to rubble, a single cruiser fled the carnage with the battle's only human survivors Captain Keyes, his small crew of Marines, and