Police have released video footage of a missing Fife RAF serviceman.
Corrie McKeague, originally from Dunfermline, became separated from friends on a night out in the town of Bury St Edmunds in Suffolk last Saturday morning.
The 23-year-old has not been in contact with anybody since, although CCTV footage has shown him sleeping in a doorway before moving on.
The location of the doorway is several miles from his home.
Helicopter searches have been conducted in the Suffolk area, with local police calling on dogwalkers or anybody in the countryside to report anything unusual.
The gunner was wearing a light pink polo shirt and white jeans at the time he was last seen.