Run, Hide, Tell In the rare event of a firearms or weapons attack: Run to a place of safety - this is a better option than to surrender or negotiate Hide and remember to turn your phone to silent and turn off vibrate. Barricade yourself in if you can Tell the police by calling 999 when it is safe to do so Police have released a video telling people to “run, hide, tell” if they are caught up in a terrorist gun attack. The 4 minute video advises on how to evacuate a building, where to hide, and what information to tell police. Please take a moment to watch this video. If you are caught up in an attack, it could save your life.