"I don't exactly have an actual specialty," Jack tells Jim, with a raise of an eyebrow. "Do I need one? How about a specialty on alien relations." There might be a little hidden innuendo in Jack's wording. "And I do have some engineering knowledge, and I do have plenty of military training."

He pushes his greatcoat aside to show the holster that is housing a .45 Glock that has since replaced his old revolver.

"In other words, I'm a bit of a jack of all trades."