The officer saved a three-week-old baby girl who was choking on milk, as her mother watched.
By Toby Wadey
BBC News Online
BBC Local Live
Everyone needs their spirits lifting at the moment, so St John Ambulance cadets in the East of England have come up with a "banging" idea to make us feel a little bit better.
Luke Stevenson, and others, want fellow cadets and St John Ambulance members to make up dance moves.
They are putting together a video to Taylor Swift's Shake It Off - but need some help.
They want to show that everyone is "standing together" and that some "fun" can still be had.
So send your best moves via email - email@example.com - or via Twitter using #SJADanceForEast.
Just make sure you never miss a beat especially if you are lightning on your feet!
By Rachel Bell
BBC Scotland reporter
By Bethan Lewis
BBC Wales education correspondent
By Matt Lloyd