A facility clearance is a security clearance granted to a U.S. government contractor or subcontractor facility that is engaged in work requiring access to classified information. This clearance is granted by the government agency responsible for the contract and is based on a determination that the facility is eligible to access classified information.  A facility clearance is necessary for the facility to bid on and perform work on classified government contracts. It involves a comprehensive evaluation of the facility's security practices, personnel, and physical security measures to ensure that it can adequately safeguard classified information. The clearance process includes a background check of key personnel and a review of the facility's security procedures and practices.  Facility clearances are typically granted at one of three levels: Confidential, Secret, or Top Secret. The level of clearance required depends on the level of classification of the information that the facility will access and the sensitivity of the contract work. Once a facility clearance is granted, the facility is required to maintain ongoing security practices and procedures to ensure the continued protection of classified information. This includes regular security assessments and audits by government security officials.  Overall, facility clearances are an important aspect of the U.S. government's efforts to protect classified information and ensure the security of government contracts.