Especially when yours isn't loaded.

While Tracy edges closer and closer to the final confrontation with Ace, his backup stands outside of the casino, ready to barge in whenever they feel the need to unless they get distracted by their phones/walkie-talkies/mini-televisions, which could happen. (I would also like to point out that maybe it only seems quiet inside of the casino because they seem to be standing at the far edge of the parking lot and if they bothered to approach the entrance, they might actually hear what's going on inside.) Don't worry folks, I'm sure that the inevitable gunfire will get them inside soon enough.

While Tracy's backup tries to figure out when to enter and whether the doors are push, pull, or automatic, things continue to heat up inside. So enraged by the fact that Tracy cheated him before he could cheat Tracy, Ace has turned blue (or black or red or whatever) in the face and has decided that just grabbing Tracy is not enough. No siree bob. Tracy must die. Unfortunately, I don't think that Ace has noticed that the name of this strip is Dick Tracy and not The Awesome Adventures Of Big Ace. I've a feeling that this won't turn out very well for the big guy, no matter what tie he decides to wear, but at this point I don't think that he'd listen to reason.
And so, with orders from the big man himself, Ace's goons (or goon) jump into action. Unfortunately, the guy either hasn't had much time at the shooting range, forgot to load the bullets, or is just slow, and while he's trying to aim, Tracy takes his shot. Poor guy, we never even got to learn his name (and if was probably something card-related too). How many more nameless goons are destined to fall before we finally get to see Ace do something besides cheat at cards? (Probably as many as Tracy has bullets for.)