 Today is also the 25th anniversary of the Boundary Waters blowdown. On this date in 1999, straight-line winds reaching 100 miles per hour tore through the wilderness, knocking down tens of millions of trees. There were 3,000 to 4,000 campers in the wilderness at the time. About 60 people were injured, some seriously, but no one died. Here's Carrie Griffith, author of a recent book on Flint Falling, Blowdown in the Boundary Waters.