Stephen A. Ruffa is an aerospace engineer, a researcher, and the originator of the concept of lean dynamics. His distinctive observations are framed by a quarter-century of background engaged in supporting many of the Defense Department s dynamic needs from the design, manufacture, test, and repair of cutting-edge aircraft, to projects ensuring the availability of critical supplies for wartime demand surges. His joint government-industry study of lean manufacturing tools and practices across seventeen aerospace producers, together with his experience with implementing business improvement init...