Hi!
I am actually in the same boat as you; after ungrad at gtown I have spent the last three years working for a defense contractor and have similar academic/gre stats. What programs are you shooting for? It would be awesome to bounce around ideas for personal statements/other application questions with someone that is applying to some of the same programs. As of right now I am applying to Georgia Tech's international affairs program, UGeorgia's international affairs program, Syracuse Maxwell School, UT Austin LBJ, Hopkins (Security Studies), and UDubb The Jackson School of International Studies.