LEONE, American Samoa - In a sleepy village on the western shores of this remote and beautiful island, the Junior ROTC instructor asks his young cadets to step forward if they have decided what to do after graduating from high school in the spring. Of 12 seniors, half march ahead to say they already have committed to a branch of the U.S. military. Three more indicate they are considering it. The last three stay put. They're interested in the military, they say, but have failed the tests required for entry. Emosi Time, a lanky boy in perfectly pressed uniform, quietly...