Abstract: A weapons accountability system includes a processor and a memory coupled to the processor. The memory stores an available slot database including a set of available slots, a scheduled appointment database including a set of scheduled appointments, and instructions that, upon execution, cause the processor to obtain the set of available slots and the set of scheduled appointments, receive user input indicating a requested slot, and compare the requested slot to the obtained set of available slots and the obtained set of scheduled appointments. The instructions cause the processor to, in response to the requested slot interfering with the obtained set of available slots and the obtained set of scheduled appointments, generate and display an error message. The instructions cause the processor to, in response to the requested slot not interfering, store the requested slot as a new available slot of the set of available slots.