I spoke with my buddy today. All I need to do is take the range safety officer course on marinenet.mil and get on the access roster to draw shot guns and ammo from the station armory.
It's crazy how many birds he can kill here. There are so many birds that we have two or three bird strikes a week (bird strike is when an aircraft hits a bird. This can cause structural damage to the airframe or if sucked into a jet intake destroy the motor. All are very dangerous situations to be in). He said a few weeks ago he killed 100, yes I said, 100 birds (seagulls, crows, herrings, and such). Iwakuni is also on the migration path for ducks. In about a month this place is supposed to be over run with them.