The story of how a boy from Halifax saved his older brother's life, will be featured in a TV documentary tonight.
17-year-old Jake Walton suffered a serious injury while out biking with his 14-year-old brother Kian, who helped keep him alive until helicopter medics arrived.
The pair were riding their bikes at Ogden Water in Halifax, when Jake fell off the handlebars, causing him a life threatening thigh injury.
Kian called 999 for help and the Yorkshire Air Ambulance was dispatched. Whilst he was waiting, Kian stemmed the flow of blood from his injured brother's leg.
Chris Kiddey reports.
Kian was there holding my leg just telling me to focus on things. "If it wasn't for Kian I'd definitely be dead. I wouldn't be here speaking now.
It was shocking but in that situation you can't just panic and start crying. You have just got to get on with it.
Jake was rescued by the Yorkshire Air Ambulance (YAA) who rushed him to hospital for treatment. Dr Steve Rowe from the YAA said:
Most people might just freak out and run off. Oh I don't like blood. What Kian did was just unbelievable obviously including the air ambulance service as well.