Percy startled a little, having drifted off into his thoughts. He patted down his pockets and found the lighter, something he didn't usually carry. He only had it because someone else wanted to smoke and he ended up with everything in his pockets after he lost a bet. Random luck? But he would take it. "Yeah, hope it still works," he muttered before handing the object over to Kallen. "You've got a plan or something?" Not until Kallen mentioned the lighter did the scorch marks on the wall really click. Fire. "Woah, now. You're not going to start a fire or something? What if they don't come and we just cook in here?!" he snapped back. Still, it sounded like a plan even if he wasn't sure to trust it. He eyed the trash around them, wondering how easy it would be to ignite. The fast food wrappers for sure. Oh, and a styrofoam cup. He remembered Alex lighting one of those on fire once and it practically exploded with flames.