The Royal Air Force and Royal Navy have handled search and rescue for 70 years, but rescue operations will be made four minutes faster with the American company's fleet of 22 new helicopters, according to officials.
The company will be fully operational at ten sites by 2017, meaning the RAF pilots will be redeployed elsewhere.
Prince William became a Sea King helicopter pilot in 2010 and is stationed at a base in north Wales. His current tour of duty was scheduled to end this year.
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