Cities across the US added drones to their firework shows this Independence Day - and others ditched fireworks entirely, citing fire threats and environmental concerns. The drones, which display choreographed art with LED lights, are considered to be more environmentally-friendly.
ncG1vNJzZmivp6x7o67CZ5qopV%2Bjsri%2FjpqtaK%2Bfp7mledSsZJyZnpaxonmVb2hqbmJtgw%3D%3D