I've seen this somewhere before... right:

The third main function of SOP was to monitor and control the use of weapons on the battlefield. As each soldier's weapon (excluding a few "naked guns") were "ID locked", only authorized individual soldiers could use that particular weapon. It could also prevent soldiers from firing on their own, committing human rights abuses, and attacking their own clients.[7] SOP governed all small arms and ammunition, as well as vehicles such as helicopters and tanks. It did not, however, govern anything larger than small arms, leaving weapons such as large missiles (for example, ICBMs) locked for usage by a higher-authority system, more specifically JD. http://metalgear.wikia.com/wiki/Sons_of_the_Patriots