KEN LAMBERT / THE SEATTLE TIMES
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Lake Union fireworks fun based on a blast from the past
Jon Berson, lead pyrotechnician for Pyro Spectaculars, holds the "dead man's switch," which Berson will hold down for 20 minutes and 20 seconds tonight to launch the fireworks show on Lake Union. "About 20 minutes in, your finger gets pretty tired from holding it," he says.
