; (II) an employee who requires a Federal security clearance working in a Federal, State or local government building, a military base, a nuclear energy site, a weapons site, or an airport or other facility that requires workers— (aa) to carry a Transportation Worker Identification Credential; or (bb) to have access to a Secure Identification Display Area; or (III) an employee assigned to perform work in the United States under a Federal contract, except that this subclause— (aa) is not applicable to individuals who normally perform support work, such as indirect or overhead functions, and do not perform any substantial duties applicable to the contract, or are working solely on contracts that provide Commercial Off The Shelf goods or services as set forth by the Federal Acquisition Regulatory Council, unless they are subject to verification under subclause (II)