The Wounded Frontier (Jack Commer, Supreme Commander, #5)

When a star thirty-four light-years away vanishes, leaving the infrared signature of a Dyson sphere inexplicably built in one week, Supreme Commander Jack Commer readies the untested Typhoon V for the star Iota Persei, roping in a talented replacement engineer doubtful of Jack's command capabilities, and cajoling a navigator beset by decades-old combat trauma into postponing his retirement for one last risky mission. Meanwhile Jack's previous engineer, who quit the Space Force to become Con...