It was abduction of schoolgirl Sarah Payne 15 years ago which led to the formation of Sussex Search and Rescue when hundreds of members of the public came forward to help look for the eight year old.
The group, known now as Sussar, is made up of dedicated volunteers who've found many other missing people and is a valuable resource for police to call on.
Volunteers are trained to a national standard and almost every week they're called out.
People like Nova Brookes from Rustington owes her husband's life to Sussar.
David Brookes who's 74 left his nursing home, scaled a fence and vanished. A former paratrooper with the Territorial Army, David has dementia but was tracked down by volunteers from the group.
Malcolm Shaw was given exclusive access to one of their training sessions.
And if you want more information about the valuable work they do you can visit their website.