Airline Dispatchers Federation.
Representing the professional interests of the Aircraft Dispatcher.
This Navaid is near, and named after, a large U.S. city. 
Its identifier is also that of the nearby general aviation airport, which no longer has airline service,
having been moved to a new airport more than 50 years ago. 
A high level of bird activity in the area is a problem for aircraft. 

Photo courtesy David Stanley
(inspired by a photo in Classic Trains Magazine!)

Jan 2021

page down for the answer!

Correct Answers:
Dale Gentry- Southwest Airlines
Mark Nashed - National Airlines

The answer is Sacramento (SAC), California
Thanks for participating!