Military Options?

I am near the cut-off age for active duty enlistment for many services. I have a BA from a decade ago and have not used it much. I have no family or binding connections. I am seeking to acquire the maximum amount of technical skill in minimum time and expense (not necessarily just coding but more electrical or information systems). I think I would do better in a structured environment since I sometimes have issues with procrastination.

Anybody have a story of enlisting in their early 30s and sucessfully learning technical skills that are also valuable on the outside?