I knew an enlisted guy with that last name. Unfortunate. But he was not related to the other Snowden in any way.
I'm not going to rule out Tim Berners-Lee either. This will be an interesting project to follow. Oh and I fully support us taking back control of our information. It belongs to US!
Here's another possibility:
[des_TFC] could mean designated traffic. As another anon pointed out TFC can mean traffic – air traffic.