"Jack, wait!" Z had called after him when he'd run off into the fog. "Damnit!" she muttered to herself as she ran off after him. He was always doing this stupid shit, and now thanks to the fog, she couldn't find him. She fought off whatever came her way, not really caring if they were dead, just that they didn't get in while she was looking for her brother.
"Jack!" She called out to him before she heard his voice...along with another one that didn't belong there. Charlie's voice. Nothing could be good if she was here. She wouldn't put it past the former A-Squad leader to let a few of the undead get into the building. No matter how much she wanted to go after Jack now, she had to stay put, for the safety of the people inside.