No, delivery by aircraft is far too risky, especially with the ones they've got! Every few years there's some missiles tests, and you think they'll strap it to a 30-year old MiG? Flown by a pilot who'd rather drop it in the ocean and fly to Japan?
Don't need a large stockpile, just some good ones. Less reliable the better, means that they'll be less likely to pull the switch.
So do they now have that comms sat. into space, or not?