On the way back from Abbotsford, we drove along the border between the U.S. and Canada. Two different roads were running parallel, which was a strange scenery because the traffic sign was written in miles in the U.S. side while in kilometers in Canada side. There was no fence or barbed wire and anyone could go across the border without any difficulty. While we stopped the car to take picture, a helicopter flew over us. I'm not sure whether it was for watching, but it is of course illegal to go across it if it seemed to be easy. We might be watched by satellites or infrared cameras.

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