I Am The River — T.E. Grau

During the last desperate days of the Vietnam War, American soldier Israel Broussard is assigned to a secret CIA PSYOP far behind enemy lines meant to drive terror into the heart of the North Vietnamese and end an unwinnable war. When the mission goes sideways, Broussard is plunged into a nightmare that he soon finds he is unable to escape, dragging a remnant of that night in the Laotian wilderness with him no matter how far he runs. A finalist for the Bram Stoker Award for First Novel!