There really is no interview process, so much as an interview screening. You go to the Military Entrance Processing Station and they give you the ASVAB, Armed Services Vocational Aptitude Battery, and you do as well as you can on it. If your score was high enough to get in, you get a physical examination and you're basically in! Just don't do anything to get in trouble with the law and you'll be on a plane to Lackland Air Force Base in no time.