What college degree can get me a job doing research and development for a defense firm?

Paul: What college degree can get me a job doing research and development for a defense firm?
I want to know how to get a job developing the latest weapons and technologies used in the military? What college or college major would be be to get this job, and in what cities is this type of thing big? Thanks.

Answers and Views:

Answer by Nutty Chocolatier
Mechanical engineering or electrical engineering would be pertinent.

Answer by eri
I have friends working in jobs just like those. They either have masters degrees in electrical engineering or PhDs in math, physics, or geophysics.