The FAA says En Route Center Controllers give aircraft instructions, air traffic clearances, and advice regarding flight conditions while en route between airports. Center controllers use radar, or in some cases, manual procedures to track the progress of all instrument flights within the centers airspace. Oh, and when workload permits en route controllers also provide radar service to pilots who are not on instrument flight plans.

How hard can that be? Look for someone with this Center Logo and ask. You will find why the Centers are the tops of Air Traffic Control facilities.

Get a Visual to see how you can customize your logo further.