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If you look it is really a "National Transportation Noise Map" from the Bureau of Transportation Statistics. I'm pretty sure those fighter jets are not considered "transportation"

I also live near a military base, and it's not accounted for either. B-52's aren't exactly quiet. Both the regional airport, and smaller airport are shown fine though.

It definitely accounts for airports around me.

There's a big N-S swath for SLC, and then a smaller X at PVU for the frequent flightpaths.

And a few of the airports seem wrong. Not sure if it's a bug, but check out Klamath Falls, Oregon and Bangor, Maine. The noise contour of Klamath is visibly wider than the entire Bay Area, that seems unlikely.

I used to live near a Navy Base and their planes/helicopters would rattle the house every week. I think if they took that into account the whole city would be bright red...