Can a non-U.S. citizen join the U.S. Air Force?

I just found this, is this true what they are saying or just fake ?http://www.af.mil/questions/topic.asp?id=8

Hi, I know this question is answered 100 of times.Let me first introduce myself, my name is Vishal. I'm from India, I came especially to Germany to become a fighter pilot. I'm 17 years old and in the 10 th grade.Lets get to the point than. Can it be possible to join the US Airforce/Navy. I mean I'm a foreigner but have a german pass, is it possible

Hi, I'm new here.This is a dumb question but why do people/you want to become a Fighter Pilot, is it because to kill and go to war or is it just because of flying ?