I am currently interning at a defense contractor and I do more than the full time people. So I am confident in my skills to get a full time job.

From an economic perspective, would it cost you less to 1) Stay in school (pay tuition) and continue doing part time work during the school year, and do a summer internship this summer, or 2) Leave school and work full time, but pay for living expenses?

I am a CS Junior as well, but I wasn't in the Marine Infantry. I agree with pradn about the social signal of having a degree, but how do the costs play out? And do you already have any full time offers?