more grammar questions

There was a meeting between the President and the Joint Chiefs. - Should "President" as in "of the U.S." be capitalized?

"Now calm down there, son," said the general. - Should "son" be capitalized if it's one of those figures of speech and not actually the speaker's son? What about if the addressee is the speaker's son?

All of the victims were human, not Jaffa or Asgard. - Should "human" be capitalized? It's weird because you would expect other alien species/race references to get capitalized...