 Use exercise and play to release the anxious energy. Play hide and seek with your dog and his favorite toy. Make it an event that lasts through the fireworks. Most events for fireworks last, what, about 20 minutes? I don't even think 30 at the max. I think most of the time is spent getting into the place where the fireworks are going to be and leaving the place where the fireworks are going to be than the actual sit and watch the firework time.