jetpackswasyes

There's no way he'd be able to answer this without losing any security clearances he has. He's not going to throw away his career to answer with anything that's not already public and declassified (things can be public and still be classified).

How much do you know about obtaining and holding a security clearance?

You're completely ignoring the second part of OPs question. Read it again and think about the security clearance process, then it should make sense.