 The sky's set to light up tonight to celebrate the fourth, but not exactly as it has in the past. Many communities are skipping the fireworks and using drones that light up instead, especially on the West Coast where wildfires have become the big fear. One California crew that made the switch last year reports the shapes formed by hundreds of drones buzzing through the sky elicited wide-eyed amazement from the crowd below. Los Angeles isn't alone.