Britain says that her Queen Elizabeth-class aircraft carrier HMS Prince of Wales, currently docked in Italy, is on five days' notice to defend Britain and ten days' notice to come to the aid of a fellow NATO member.
Remarkably, half the ship's crew are under the age of 25.
The Royal Navy carrier and her Carrier Strike Group has been touring the world testing out dangerous areas.
Italians seemed intrigued at the mighty British ship as she lurked off their country's southern coast.
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