An Army official today confirmed that the service will stop producing Humvees and Joint Light Tactical Vehicles. And General Dynamics Land Systems will be told to stop producing its brand new light tank, the M10 Booker. (The Wall Street Journal first reported on those cuts.) “The Booker is a classic example of sunk cost fallacy, and the Army doing something wrong,” [Army Secretary] Driscoll said. “We wanted to develop a small tank that was agile and could be dropped into places our regular tanks can’t. We got a heavy tank.”