I would move away from a hard "military" background like that. Maybe you were from a military family who EXPECTED you go off and become a spook, but you had other things in mind. I like the idea of a dedicated thief, but the "special-forces" part is what concerns me. So far on the team, we have a College educated Street Doc, a starting out Hacker/Infiltrator, a face/back up gun-man who used to work in stockbroking, and two characters in progress. A thief/demolitions girl could be awesome, and that would be a way for us to work in a military background. Demolitions, Automatics,Heavy Weapons and Throwing Weapons(Grenades), along with AGI skills, and some other things mixed in to round it out. Also, a local bomb squad background could work, Honestly, with a 400 bp build its really hard to have ALL the skills at a high enough level to call it "special forces", but allows you to be an "expert" in one or two fields.