No small thing turning around the terror NYC was experiencing. Have Hunter or Gingrich done something similar? Talking a policy is good but Giuliani has walked the walk.
Both have extensive legislative and policymaking experience. If you're limiting it to combat/law enforcement experience, then you limit yourself to Hunter and McCain. I'll include Rudy based on his prosecutorial career, Mayor brings him back into the policymaking realm, which puts Gingrich back in the race.
And I have an understanding of Gingrich, Hunter, McCain policies based on their actions in Congress. In Newt's case multiple position papers since he left.
I really haven't a clue as to Rudy's plans for Iraq. Or Iran. Or frankly for anything. That's a political strength of course, as he's not tied to the war. He's been the race long enough that he needs to present a viable platform. It would give him an opportunity to confront social issues as well, rather than being associated with decades long positions.