Vito hadn't exactly made a habit of following Jackie around the city. However, since he'd given her the gun, he had tailed her once or twice.
It was one thing to sell someone a gun in peacetime, for protection. It was an entirely different proposition to pass one along in a city under hostile occupation. The results were bound to be a lot more interesting.
Besides, Jackie had made a big impression on him, and he certainly didn't want anything bad to happen to her. So he stayed close, with a gun of his own under his coat, waiting.
Waiting for the shot he'd just heard.
Not wanting to catch a bullet himself, he paused near the mouth of the alley, trying to look casual as he lit a cigarette, the light of his yankee Zippo lighter flaring up and illuminating his face momentarily.