Service response standards can be a significant contributor to maintenance contract costs. The cost of 4-hour service response 24 hours per day, 7 days per week will be significantly more expensive than more liberal standards. A regionally coordinated approach to service levels may reduce costs by providing a more sophisticated approach to the development of Statements of Work and applying a more analytical risk-benefit assessment for equipment to be covered. In other cases, additional risk may be tolerable in an area if equivalent services or equipment are available in the region. Opportunities may exist for shared or back-up support for first response, allowing contract-service-response requirements to be reduced.