Jack and Wang first met when they served together in the military.
- The movie doesn't tell us much about how they first met. The patriotic toast Wang gives at the bar seems out-of-place until you realize that he was saying it only to Jack, not to the entire group. It could be that they first met in the Army or the Navy.
- Unlikely, since Jack never killed a man before the film when he looks horrified after killing a mook before pretending that he does it all the time. Fire-Forged Friends usually get that way by serving in battle together. The events of the film seem to be Jack and Wang's first shared battle.