In February 2018, a man in the town of Bury, UK needed help.
He was drowning in a river.
On video, he is seen trying desperately to stay above the surface, but to no avail. The water was not only freezing, but was fast moving as well, making it all the more difficult for him to swim.
This is when a police officer jumped into action.
Watch to see what happens next.
Credit: Greater Manchester Police via Storyful