Get the latest headlines: [ Ссылка ]
Footage of police firearms officer training has been released as part of the Metropolitan Police’s work with Facebook to improve detection of live-streamed Christchurch-style terrorist attacks.
Telegraph.co.uk and YouTube.com/TelegraphTV are websites of The Telegraph, the UK's best-selling quality daily newspaper providing news and analysis on UK and world events, business, sport, lifestyle and culture.
![](https://i.ytimg.com/vi/3KcggAtSC-E/maxresdefault.jpg)