They can't know.
Also I would argue people in the NSA are less honest then normal despite the background checks.
Never, ever lie or knowingly omit information on a security clearance form. If you tell the truth and you are disqualified, it’s extremely unlikely that information will be used against you. The FBI isn’t going to come after you for doing mushrooms. If you lie to the federal government while trying to obtain a security clearance, they will put you in federal prison.
The us government is fatally corrupt, and anyone who 'trusts'the fbi to do or not do something has a child like innocence, wholly ignornant of history, even recent history.
Shine on HN, there certainly is no pro government propaganda you wont shy away from amplifying. Morally bankrupt yet I'll be the one flagged into the ground, pathetic.