GAMBO, N.L.—Every Friday evening, Steve Badcock pours himself a drink and flips open his laptop to video chat with a close friend he met because of a terrorist attack in New York City and its ripple effect across the skies. It often takes a few tries to connect—internet can be sketchy in the rural Newfoundland community of Gambo, where Badcock lives and where his friend Steven O’Hehir arrived on a school bus after his flight to Cincinnati was diverted to central Newfoundland on Sept. 11, 2001. This past Friday, after a few more failed attempts than usual, O’Hehir suddenly filled the screen, beaming in from his home in Winchester, England, laughing and making wisecracks while proudly displaying his Newfoundland T-shirt. The day 20 years ago that began with two hijacked planes flying into the World Trade Center in Manhattan caused “so much misery and so much sadness for so many …