Echo Effect — Robert D. Armstrong

A terrifying new breed of U.S. super soldier is surfacing. They call it the E.C.H.O., an unparalleled hunter constructed from reverse engineered alien materials. Thousands of miles away, resourceful U.S. Army Ranger Michael Keller is caught in the gears of greed, thrust into the corporate fueled Star Rust conflict of 2074. Despite his wits, he never comes home from war, leaving his fiancée, Vala, behind. Enter the world of debilitating technological diseases, alien salvage mercenaries, and ruthless corporate tycoons in a fight to discover the truth.