What is the main function of the National Security Databases mentioned?

The primary function of the National Security Databases is to keep track of individuals who are eligible for security clearances and to monitor the status of ongoing investigations related to personnel security. These databases play a crucial role in ensuring that only qualified individuals are granted access to sensitive information and facilities, thereby maintaining national security. They serve as centralized repositories of information that securely compile the results of background checks, security clearances, and any relevant changes in an individual's status that may affect their eligibility.

These databases help security personnel and agencies remain informed about the current clearances and backgrounds of individuals, ensuring a thorough vetting process that protects national interests. The accurate tracking of this information is essential for making informed decisions regarding the granting and maintenance of security clearances.