Yep. Born in '52 [we have this from several props over the course of the series, including his ID Card and a couple of computer shots of his file], graduated the Academy in 1974 [there's a good photo of the diploma prop in Propworx first Stargate Auction Catalogue]. This makes his Vietnam Service Ribbon a tidge problematical, but...

Stargate SG-1: The Ultimate Visual Guide by Kathleen Ritter
http://www.amazon.com/Stargate-SG-1-Ultimate-Visual-Guide/dp/0756623618/ref=sr_1_26?s=books&ie=UTF8&qid=1322737192&sr=1-26

has a lot of good stuff, including a closeup of all of Jack's service ribbons and an explanation of what they are.

Note especially that Jack, as a graduate of the Academy, is not only in a very elite institution, but to attend he must also have received a nomination from a Senator or member of the House of Representatives.

http://en.wikipedia.org/wiki/United_States_Air_Force_Academy