When should primary, spare, and control keys to munitions facilities be inventoried?

The correct answer is that primary, spare, and control keys to munitions facilities should be inventoried at the end of each shift. This practice ensures that the security of munitions is maintained at all times and helps to account for the keys that provide access to sensitive areas. An end-of-shift inventory allows for immediate identification of any discrepancies, such as lost or unreturned keys, which is crucial for maintaining the integrity and safety of the munitions facilities.

Conducting inventory at the end of each shift ensures that each incoming shift can verify the status of the keys and take necessary actions if any keys are missing. Regular checks contribute significantly to minimizing security risks and maintaining accountability in operations involving munitions.

In contrast, while daily checks might seem beneficial, they wouldn't ensure the same level of accountability as an end-of-shift inventory that directly addresses the handover between shifts. Monthly inventories would not provide timely detection of any security breaches, and weekly inspections during safety checks could be too infrequent to ensure ongoing security.