Wildfires near Duluth are nearly contained, but smoke from Canada is prompting an air quality alert. The search continues for a missing teen in Columbia Heights, and a former state trooper pleads not guilty in a crash that killed an 18-year-old. Plus, the Timberwolves’ season ends in Game 5, and Minnesota's Frost celebrate another Walter Cup win. Join Maria Lisignoli for 4 Things to Know this Thursday, May 29th.

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