The manufacturer of Military Generator Sets has one performance criterion that far outweigh's all others: RELIABILITY. Strict adherence to MIL-SPEC's requires the use of qualified materials that limit available sources, processes and procedures. Technological innovation commonly employed by the commercial sector, is utilized less in military sets where compliance with end-item performance standards is more important. Unique features, and extreme environmental conditions demand levels of quality assurance and testing vital to guarantee reliability in operation. Striving to achieve least cost and high performance standards can result in higher costs. The challenge is to control these differences, build and test generator sets to meet exact specifications.