FILE - In this Thursday, Sept. 7, 2017 file photo, Britain's Prince William accompanies Prince George as he is met by Helen Haslem - the head of the lower school on arrival for his first day of school at Thomas's school in Battersea, London. A 31-year-old man has been charged in England with sharing a photo of Prince George and details about his pre-school in a social media post prosecutors allege was meant to help others plan terror attacks, it was announced on Wednesday, Dec. 6, 2017. Prosecutors allege Husnain Rashid put the information about the 4-year-old son of Prince William and the former Kate Middleton on the encrypted platform Telegram. Britain's Sun newspaper reports that Rashid allegedly posted the silhouette of an Islamic State fighter beside George. (Richard Pohle/Pool Photo via AP)
Prince William and Catherine visited Canada, U.S. their first official overseas trip.