Re: So
One way or another I suspect Verizon and CenturyLink will be wanting to claw those fines back from Intrado now, since this resulted from their screwup, either in the form of "you just cost us $16m, hand it over" or next contract renewal going along the lines of "last time we paid you $x, but you screwed it up and cost us $16m, so we'll knock that off the fee this time OK?"
Whatever happens with the fines, I just hope they implement better monitoring to detect outages like this in future.
(Funny, I remember being assured by smug UK regulator-drones a few years ago that 911 just doesn't work reliably in the US because there are too many local calls clogging the exchanges. I also remember the reaction when I mentioned that claim to someone at a US telco at the time...)