He held a top-secret clearance as a member of the nuclear weapons handling and loading team.
They are men like Mr. Walker, who was never investigated again after he received a top-secret clearance in 1965.
Everyone was required to have top-secret clearance to work there.
A rear admiral with top-secret clearance can get a lot done behind the scenes.
The greatest demand, job seekers and employers say, is for top-secret clearance.
But I know that each one of you has held a top-secret clearance in the past- except Katherine.
The really good stuff, since every file clerk has top-secret clearance.
One suspect was said to have had top-secret clearance in the American military weapons industry.
The other applies to Justice Department employees holding top-secret clearances.
The Post estimates that out of 854,000 people with top-secret clearances, 265,000 are contractors.