Someone who didn't know her as well and hadn't either fought beside her or watched her fight might have been more concerned about keeping an eye on Dom to make sure she didn't get hurt. Jack lived under no such illusions. If anything, he was the one more likely to need a hand. Unless he shifted. But there wasn't any fun in it. The minute he turned into Werewolf, a number of people would probably just panic and flee. Or just shoot him. It was a lot more fun to punch and kick and take a few lumps than be shot. He knew from experience.
"Is this really the best you guys have to offer?" he quipped at them as he avoided one punch and then kicked the guy in the stomach. He wasn't fast enough with the next one and got clocked neatly in the jaw, which made him stumble. Recovering, he tackled the man around the waist, driving them both to the floor where he managed to get the upper hand by straddling his opponent. In an attempt to keep the other man off balance, he grabbed his head with both hands, kissed his cheek and then slammed the man's head into the floor. It was old and mostly rotted so it shouldn't do too much damage.
As it turned out his turn being on top was short lived. Two men quickly knocked him off their buddy and onto the ground. "Hey, now, one at a time. I've never been turned on by groups." And that was when he got punched in the mouth hard enough to taste blood.