I copied and pasted this from 'The free dictionary by Farlex'
because i couldn't explain it clearly.
'The use of aircraft, surface craft (land or water), submarines,
specialized rescue teams, and equipment to search for and rescue
personnel in distress on land or at sea. Also called SAR. See also
combat search and rescue; combat search and rescue mission
coordinator; component search and rescue controller; isolated
personnel; joint combat search and rescue operation; joint search
and rescue center; joint search and rescue center director; rescue
coordination center; search and rescue mission coordinator. '
Dictionary of Military and Associated Terms. US Department of
Defense 2005.
Is this what you ment?