The prime minister stunned a group of people taking part in a citizenship ceremony today when he showed up unannounced at Acadia University in Wolfville, N.S. The 45 newly minted citizens had just read aloud the oath of citizenship when they were told to stand by for a video message from Justin Trudeau, which is part of the usual ceremony. However, they were told there was a technical problem. At that moment, Trudeau appeared from behind a doorway and the crowd roared its approval.