Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Bright Shining Lie by Neil Sheehan

A lengthy but involving account of the career of John Paul Vann, a US Army officer and latterly a civilian adviser with the Agency for International Development (AID), who died in a helicopter crash near Kontum, Vietnam in June 1972 (generals Westmoreland and Stilwell both attended his funeral, as did Robert Komer and William Colby of the CIA). Vann attracted attention early on with his outspoken comments about the South Vietnamese military after the battle of Ap Bac in January 1963, the author being one of the journalists who interviewed him on that occasion.Successfully combining biography and history, this in fact goes further and includes a lot of useful background material as well. An impressive achievement, one of the better books about the Vietnam War.