here. >> reporter: so this is as far as you can go without provoking a war? >> yep. >> reporter: looking at the wing man, behind him, north korea? >> over those mountain there is, you can see north korea there. >> reporter: so is that where all their artillery is and rockets? >> oh yeah. >> reporter: captain moses, aka the beast. how to attack north korean targets and evade their fire. it was hard not to pass out. it's also hard to deny that the u.s. is increasingly ready for war. even if it says it doesn't want one. the highest concentration of naval power has come together here in years. in the pacific, three aircraft carrier strike groups. add to that about 32,000 u.s. troops in south korea. reinforced missile defense systems. and more f-35 jets to the