Drone light shows are replacing fireworks in some US cities.Crissy1982/Getty Images Some US cities have replaced fireworks with light shows performed by drones. Cities in California and Colorado have implemented drones in their Fourth of July festivities. Drone shows reduce the chance of wildfires and sound pollution. Some US cities in states like California and Colorado have replaced fireworks with light shows performed by drones for Fourth of July.In San Diego, hundreds of drones are set to replace Tuesday's firework shows throughout Ocean Beach and La Jolla.Lakewood, Boulder, and Castle Rock have opted for drone shows following the switch from other surrounding cities in Colorado last year.Some fireworks shows were canceled this year.