This is the incredible moment a pensioner and his younger colleague held up four military trucks thought to be carrying nuclear warheads.
Brian Quail, 78, and his colleague Alasdair Ibbotson, 21, brought the convoy to a grinding halt by throwing themselves in front and under the trucks.
The pair flagged them down on a roundabout in Stirling, before Brian crawled underneath a truck while Alasdair lay down in front of them.
Police are seen jumping off motorbikes and running over to the pair, desperately trying to pull them away from the convoy.
Video footage recorded by activists from Stirling University CND shows a queue of traffic building up in the background as officers struggle to remove the protesters.
VIDEO: Angry protesters throw themselves at nuclear convoy near A84