Royal Navy forces from the West Country have helped escort a Russian warship through the North Sea and areas of UK interest on Christmas Day.
A Merlin helicopter from Culdrose-based 829 Naval Air Squadron supported HMS St Albans as it accompanied the Russian vessel.
Navy personnel monitored the Russian frigate, keeping track of its activity.
A Wildcat helicopter from 815 Naval Air Squadron, based at RNAS Yeovilton, was then dispatched to monitor two further Russian vessels.
The festive season has seen an increase in Russian units transiting UK waters.
A total of 1,540 men and women are deployed worldwide, with a further 2,485 on standby for any defence or civil task that may emerge over the festive period.
Defence Secretary Gavin Williamson says he "will not hesitate in defending our waters or tolerate any form of aggression".