Airline Dispatchers Federation.
Representing the professional interests of the Aircraft Dispatcher.
This Navaid is in the United States, and is named after the nearby city, which itself is named after a geological feature,
which itself is named after Native Americans!

Its identifier is the same as the airport, which is 4.4 miles away, and served by several airlines. 

The airport is also an Air National Guard base.

Aug 2020

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Correct answers:

Dale Gentry - Southwest Airlines
Lissa Hanson 
David Birkley
Kenneth Dechmerowski - National Airlines
Mark Nashed - National Airlines

answer- scroll down!

FSD- Sioux Falls, South Dakota