What crap and an epic math fail.
Given the different operating systems involved on many different systems throughout the world, I would guess there is A LOT MORE than 50 zero days available to the US Government. However, we'll never know as these fall into special access programs; and those who work on Apple do not know what those who work on Microsoft have. Those who work on CISCO applications will not know what those who work on firewalls will have. Etc. etc.
It's always interesting when someone makes a claim about being with some agencies program, yet fails to really put 2 and 2 together.
So Professor Healey... I'd say give your students a pass, but give yourself a big fail... because you didn't adequately provide a good background for them to use. It also seems your background in JTF-GNO (as it was properly referred to when founded) is questionable.
If you were part of the organization then... just what exactly did you do? Because it seems you're way off base. You don't even have the wisdom to realize just how many different applications and OS's are researched.