Here’s an article in the LA Times about Sioux City’s three-letter airport code:

And then there was — and still is — the Sioux Gateway Airport’s ignominious three-letter identifying code: SUX. For decades, city fathers have moaned about the label. In 2002, the mayor labeled it “an embarrassment.”

Dave Bernstein has heard all the jokes during his 42 years in Sioux City. But, unlike some other residents, he has taken to heart the old adage about what to do when life hands you lemons. He’s making T-shirts — emblazoned with two words: “Fly SUX.”…

After more than 50 years being the butt of jokes, Sioux City officials in 1988 appealed to the Federal Aviation Administration to change the airport’s moniker. The FAA offered them GAY, as in Sioux Gateway Airport. “Thanks but no thanks,” the local leaders told the bureaucrats in Washington.

I think I’ve identified the city of our next trip together.