"It's never let us down in the past." He tried to offer her a reassuring smile but it was forced at best. He had to try to play the confidence role so Syd wouldn't panic to much. Or at least much more than she was. If she wasn't? Then he would worry..because he'd panicked when he first arrived. She was doing much better than he had, he hadn't exactly handled it with a stunning grace. "Look..it's not New Tech, and I know I quit and all..but I'm not gonna let anything happen to you. We're on our own here so we need to stick together. Think you can trust me one more time?" He stopped walking for a minute to look at her.
Jack had quit SPD but he always followed through with the current threat. These demons were a current threat, and now he had even more of a reason to learn everything he could about them. So he would. Syd. She was his teammate and he was protective of his friends and she was one of his best ontop of being his teammate.
He knew it was freaky and weird. But really she needed the information, it wasn't going to be easy considering where they came from but that only made it more vital that she got it.