Similar experiences as above. As a “Joe-bag-o-donuts” Air Force pilot I had the basic Secret clearance coming out of ROTC. Four years later when I got assigned to a squadron that required a TS/SBI clearance, the fun began. The clearance itself took ten months, after which I got calls from old forgotten friends. It would go like this:
“Hey, pilot141, this is Jockdude from high school! Wassup?”
“Ummm…nothing…how’s it going?”
“Better than you, man! Some FBI dude came around asking everyone about you…are you in trouble, dude?”
“No…I work for the Air Force…it was probably about a security clearance.”
“Whaaa? You didn’t get busted or nuthin?”
“No, I didn’t. Hey, how did you get this number, anyway?”
“Uhhh…Cindy from the reunion committee had it. You’re not going to jail or nuthin?”
“No.” :rolleyes:
As for the OP, I must say that a “freelance” security clearance is not really something that you can just get. The feds restrict clearances to people who actually need them. Most of the Dopers who have responded have had clearances granted through the military, but it’s possible to get one while working as a civilian - if you have the right job. The main thing is cost - I was told that the TS/SBI background check costs over $100,000. No one is going to spend that money on you unless they need you to do the job. And the government won’t let you “buy” a clearance like that just for the heck of it.
The “marketability” of clearances comes at high levels in specialized fields. If you are an aero engineer who works at Lockheed and helped design the skin of the F-22, then Boeing knows that you can work on their new project with no delay - the security clearance is already there (paid for by Lockheed, thank you very much), so come on over!
Remember that security clearances (like anything good) have expiration dates. The better the clearance, the more often the renewal. Some may require renewals every six months. In these cases, simply having a job that does NOT require you to see or work with classified material will cause your clearance to expire. If you get shuffled over to an office that doesn’t deal with sensitive material - say adios to your top-level clearance.
So, getting a security clearance is not like going to bartender school - just one more thing on the resume. If you get one, it’s because someone thought you needed one.