Laser peening is a qualified process, highly deterministic in its application, that is in reliable production use extending the fatigue life and stress corrosion cracking resistance for aerospace and automotive alloys. Deterministically applied stress enables engineers to systematically call for residual stress to the intensity and depth desired so as to achieve design goals. The process employs a unique solid state laser system with 1GW peak power, real time adjustment of power density and relatively high repetition rate.  Each laser pulse is directed on to the metal surface creating a highly controlled pressure wave that is capable of imparting residual compress stress.  Through control of laser power density, pulse duration and percent coverage, the depth and intensity of the compressive stress is precisely controlled on a point by point basis. Residual stress as deep as 10 mm in specific materials can be generated with several repetitive layers of peening. Shallow peening with less intense surface stress is achieved using lower laser fluence, smaller spot size or pulse duration and minimal layers of coverage. Each of these parameters is precisely controlled with each laser pulse and recorded for quality assurance in processing. Over 15,000 wide chord fan blades and blade hubs have been laser peened for operation in commercial jet engines. Fixed systems are used to treat meter scale components and transportable systems handle field operations directly on large structures. The technology has been FAA/JAA certified and ISO 9001 approved. A broad range of materials are in production or development, including but not limited to Ti 6-4 (alpha and beta and BSTOA), 300M and 9310 steels, Al 7050, and Al 2024, Al 5059 and MP35N and C22 corrosion resistant alloys. The Authors will describe the system and present materials performance data contrasting as-machined and shot peened to laser peened results.