Traditional Fourth of July fireworks displays are being replaced by large swarms of small drones with colored lights. It reduces wildfire risk, pollution and loud noises.
AILSA CHANG, HOST:
Big fireworks displays are a staple for many Fourth of July celebrations, but a hotter and drier climate in the West is making it too dangerous to set them off. So more places are now switching to a less flammable alternative. Colorado Public Radio’s Matt Bloom has more.
GRAHAM HILL: Connected. They’re looking good. OK. I’ll check the preflight there.
MATT BLOOM, BYLINE: Graham Hill is sitting at a computer overlooking a big
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