First of all, new firearms licence applicants are searched against police and court data bases in order to assist a chief firearms officer in determining an individual's eligibility to hold a firearms licence. Then the firearms license holders are also under continuous eligibility screening, and the chief firearms officers are advised by police and by courts of occurrences that may affect the individual's eligibility to continue to hold a firearms licence.
That continuous eligibility process enables new, relevant occurrences to be entered into police or court records management systems and to be paired with those who hold a firearms licence, so any potential matches are sent to the chief firearms officer of jurisdiction for further investigation, and most of those decisions to hold or to continue to hold a firearms licence are based on—