IT TAKES a special kind of person to wake up at 3.30am, leave a warm bed and travel miles in the wind, snow and rain to hunt for a person who may never be found.
But that's what the team at Essex Search and Rescue do week in, week out, all over the county, and further afield, for no pay whatsoever.
These highly trained volunteers, who rely solely on the generosity of the public and local businesses to keep carrying out their vital role, are keen to remind people it could be them who needs their help next.
"The message we want to send out is that everyone knows someone that may go missing. This could be for any reason, whether it's that they are old with dementia or they could be mentally ill with nowhere to turn and at that moment they can call us," said Chairman of Essex Search and Rescue Stephen Nicholas.
"I remember a particular search in Ingatestone where we managed to locate a missing lady. One of the family members approached us to thank us for the time we had spent looking for her.
"To see the relief on their faces, with tears in their eyes, it was a great feeling."
The team go through a rigorous training scheme before they can join. Their training includes first aid, navigation techniques, and radio operation, and they continue to train two days every month, updating a log book, which keeps track of their skills.
With call-outs which could come from Harwich to Harlow and from Saffron Walden to Southend, the team must cover a vast area.
And if covering the whole of Essex wasn't enough, the team also assist colleagues in neighbouring counties when they need extra help.
Chairman Stephen, who retired from a role in IT almost three years ago, chose to get involved after reading a leaflet about the number of searches that Essex Police conduct for missing persons.
He told the Chronicle: "If someone is despondent or has dementia then it can be scary to hear that they have gone missing.
"We are a very small charity, we don't have the media departments and PR that other companies have so we do most of that ourselves. We are entirely self-funded so that part of the job can be hard work."
Following his retirement, the Wickham Bishops resident wanted to spend a little bit more time in the outdoors and felt the charity was a great opportunity to become involved in volunteering.
He added: "I spent my whole working life behind a desk so I wanted to do something completely different, I was interested in volunteering and this sounded perfect."
The organisation was set up in 2002 to mirror other branches in Suffolk, and works closely with Essex Police, even operating out of a specially adapted vehicle stationed at the police depot in Boreham.
Their new £9,500 van was recently funded by Bradwell power station owners Magnox, working in partnership with the Nuclear Decommissioning Authority.
Chartered surveyor Matt Cloke, 42, is a veteran of over 400 call-outs, and has been involved with the organisation for eight years.
He said: "Our main role is to assist Essex Police in searching for high-risk people.
"But whoever needs to be found, we can help, regardless of their background
"After a brief discussion, when we arrive at a certain area we will establish a search plan and then conduct a physical search.
"It is a lot of commitment but if you wanted to give something back and make a difference then this would be great for you."
The Essex Search and Rescue team are always looking to recruit new volunteers and would gratefully accept any donations.
For more details log on to essexsearchandrescue.org.uk