
Howard, the person at fault for you
not getting a security CLEARANCE is me.
The Big Bang Theory Season 4, Episode 7

She doesn't exactly have CLEARANCE.
The Big Bang Theory Season 2, Episode 8

Guess who didn't get security CLEARANCE
to work on the giant space laser?
The Big Bang Theory Season 4, Episode 7

I'm in breach of my security CLEARANCE.
I'm going to prison.
The Big Bang Theory Season 10, Episode 20

Listen,
I have to get a security CLEARANCE...
The Big Bang Theory Season 4, Episode 7