A story on B3 Tuesday misstated the maximum number of kilograms a drone must weigh to require registration with the FAA. Drones weighing more than 0.55 pounds (250 grams) and less than 55 pounds (25 kilograms) must be registered.
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Special report: Go behind Minnesota's pro-athlete curtain to see how the best athletes in our state get ready for their biggest moment: gameday.