Missing Corrie McKeague’s final six hours are being plotted using military-style software.
Specialist maps overlaid with information from social media are being prepared using state-of-the-art equipment and satellite images.
They will include places where Corrie was spotted on CCTV and the areas searched.
The work is being carried out by Scots ex-serviceman Forbes McKenzie, who runs McKenzie Intelligence Services (MIS).
The former Hawick man, who now lives in London, has been employed by Corrie’s mum Nicola Urquhart to help find the 23-year-old who disappeared after a night out in Bury St Edmunds in September.
Mr McKenzie’s firm is staffed by former military personnel, who are making maps for every aspect of the case.
He has insisted his company is not a private investigator firm and denied suggestions it was given £50,000 raised through online donations to carry out the work.
This follows concerns by Corrie’s father and members of the public.
Mr McKenzie said: “What the family has asked us to do is to make maps for every aspect of the case.
“That includes Corrie’s final footsteps in those last six hours he was seen, including areas searched and not searched, to what level and extent things have been searched.
“In terms of social media, you only need to go near the Find Corrie Facebook site to see the level of interest.
“There are 110,000 people who have been talking about it.
“Our job is to sort all of the conversations out on the various social media platforms, going right back to the event, and compile it in such a way that it can be handed across to the police and they can exploit it using their own software.”
Mrs Urquhart added: “Since the inception of the Facebook page, the web page, Twitter and the phone lines we have amassed a vast amount of information in a format I have never seen gathered to this extent in any police investigation.
“I worked with the police in trying to find ways of providing this information to them. However, nothing appeared to work.
“I was not willing to allow this information not to be collated so went about trying to find someone that would be able to do this for us.”
