The American Meteorological Society (AMS) grants the title of CCM to professional meteorologists who have both broad experience in meteorology and a highly specialized knowledge of particular fields on which they intend to consult. In addition to education and experience, a meteorologist has to demonstrate professional conduct and service to be named a CCM. They are sought out by law firms, governments, law enforcement agencies, insurance companies, and other private businesses for their expertise and for the assurance that all CCMs will provide reliable and authoritative information. Only about five percent of AMS members are CCMs. The AMS provides a listing of CCMs by specialty on its website at http://www.ametsoc.org.