Kerry Whisnant, an avid St. Louis Cardinals fan and professor of physics at Iowa State University, may be on to something that will greatly impact team winning percentages. Mathematical models that he and other fanatic baseball statisticians have helped produce may accurately predict teams' successes. Whisnant and other members of the Society for American Baseball Research have analyzed...
Check this out: http://www.cs.dartmouth.edu/farid/mathkids/prime.html
It shows one of the many ways that National Security Analysts use math in their job. It talks about how to make a math based code that is almost impossible to crack.