Jurisdictions may handle SAR membership and responsibilities slightly differently depending upon geographical locality and existing governmental agencies. Many SAR on waterways are the responsibility of the US Coast Guard. Within many of the National and State Parks, the NPS or SP may have SAR functions either independently or in cooperation with local SAR. In many cases SAR functions are handled by the Sheriff’s Department, with members being either/both career and/or volunteers. In some areas the Department of Fire/Rescue Services handles the SAR. Check with your local Sheriff’s Department and/or Fire Service, they should be able to direct you the correct agency. Here is a web site that may also be helpful:
http://www.nasar.org/
Pete