Although subtle differences do exist, it is possible to integrate an ISO 14001 EMS with your ISO 9001-compliant management system. The year 2000 revision to ISO 9001 has greatly enhanced its compatibility with ISO 14001. A variety of companies are focusing their attention on ISO 14001 environmental management systems, primarily manufacturers in automotive, chemicals, pharmaceuticals, and electronics, as well as utilities, printing, metalworking, and assorted manufacturing companies. In addition, the U.S. Department of Defense and many other government agencies are showing an active interest in ISO 14001.