WATCH: What you should do during a terrorist attack
![Run, hide, tell... police instructions on what to do during a firearms attack.](https://www.yorkshireeveningpost.co.uk/webimg/legacy_ash_90624385.jpg?crop=3:2,smart&width=640&quality=65&enable=upscale)
![Run, hide, tell... police instructions on what to do during a firearms attack.](/img/placeholder.png)
This police video gives instructions on how to stay safe during a terrorist attack involving firearms and other weapons.
It has been shared on social media by police forces across Yorkshire and the rest of the UK during the last few days.