BARRIE, ONT. Researchers with Northern Tornadoes Project (NTP) are surveying the damage in a Barrie, Ont., neighbourhood after an EF-2 tornado touched down last week and said they believe some of the destruction was preventable. In all, 71 homes were deemed uninhabitable, and roughly 100 people were displaced. According to Dr. Connell Miller, a researcher with NTP, much of the damage caused by the powerful storm may not have happened if certain protocols were followed. We saw non-successive failures, and what I mean by that is usually your shingles get ripped off before the roof, which gets ripped off before the walls, he said. But we saw walls ripped off before roofs and shingles and things like that, which is a sign of insufficient construction.