"Pretty sure we're supposed to use the gym. Why else would it be here?" It could be a trap, Mac guesses, but that seems like a really stupid and probably illegal trap. He doesn't see any signs telling people to not climb the equipment, and he's pretty sure that if you're going to get someone in trouble for doing something obvious in your establishment, you have to put signs up according to the law. That's the whole logic behind those "no shirt no shoes no service" signs, which he's probably too familiar with on account of both Charlie and Dennis and sometimes Frank.

Mac does not approach any of the gym equipment. He just squints down his nose and watches Kevin while he idly wanders.

"Are you what, sixteen? I thought they were only hiring adults." Hiring, abducting - Mac's already absorbing Jorgmund's lingo for everything that happens here. He can't help it; this whole experience has been much too comprehensive for him to contort, collapse and stuff into his own worldview, and so he's incapable of doing anything adopting theirs. It's an unfortunate side effect of the fact that he decided about five minutes into this whole nightmare that he wasn't going to actually consider anything happening around him as a problem to be fixed so much as a situation he's already totally handling.

He stops his pacing when he comes across the baseball launcher. "Hey, have you tried this thing out?"