A nuclear power plant policeman has been told off by his bosses after doing a kung-fu to knock off a bottle top as part of viral challenge.
Footage shows the grinning officer completing the stunt while holding a machine gun at the Dungeness plant in Kent.
A clip of the unnamed officer completing the 'bottle cop challenge' was posted on Twitter by the Civil Nuclear Constabulary (CNC) - but it was deleted soon afterwards.
It tweeted: "What do you think of our effort for the #bottletopchallenge? Do any of our policing friends fancy rising to the challenge? @nuclearpolice #police #bottlecapchallenge"

The police officer was later spoken to about his actions at the plant which is a top terrorist target.
A spokesperson for the CNC told the Sun: "We were made aware of a tweet from Dungeness which contained a video of the bottle-top challenge.
"The officer has been given appropriate management advice."
A CNC spokesman later told the Mirror Online: “We were recently made aware of a Tweet from officers at Dungeness, which contained a video of the bottle-top challenge.

"The officer concerned had already deleted the video having reflected on whether it was appropriate or not.
"The video and tweet were not an example of how we would want our social media account to be used and the officer concerned has been given appropriate management advice."
An angry local slammed the officer, saying: "Armed police d****** about with firearms while people are getting stabbed on the streets?
"How can you be an armed officer and do things like that?."

The CNC protects ten sites across the UK, eight of which have armed police, and guards nuclear materials.
There are 1,500 officers in total and they can be deployed to other areas during terror attacks such as the Manchester bombing in 2017.