The Duke and Duchess of Cambridge are attending a parade to mark the official disbandment of the RAF Search and Rescue Power.
Hundreds of individuals owe their lives to this distinctive unit, whose well-known yellow helicopters have plucked injured fishermen from raging seas, winched climbers from treacherous cliffs and airlifted flood victims from the rooftops.
The Search and Rescue Power dates again to 1941 when it was shaped to rescue pilots shot down at sea.
Since then it has grown to incorporate at sea rescue for stranded civilians, mountain rescue for injured climbers, and flood victims.
The parade is going down at RAF Valley in Anglesey the place Prince William served for 3 years as a search and rescue pilot.
Our reporter Rosie Laydon went to RAF Valley to see the station put together for the Royal go to.
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