Last night, construction work on the roof at the very important FAA center in Leesburg, VA, caused a building evacuation that completely shut down all the air traffic in, out of, and over Dulles, Reagan National, and BWI airports.
(Mine was one of the flights affected. We were even boarded and about to leave the gate. We got dumped back into the terminal where, two hours later, United cancelled the flight.)
If you ask where were the back-up systems that should have come online, oh, within 90 seconds or so, I did too.
Turns out, there are apparently NO back-up systems. We have, then, a fragile critical system with immense commercial and national security implications, and no redundancy. And the whole world know it! This is a problem, and it needs to be addressed. Feel free to contact your Congress-thing, and make sure you call them out on the weasel-ish non-answers they give. When the FedGov takes it upon itself to police the airways, it needs to do that right.