It turns out that a younger child had managed to consign his precious pacifier to an inaccessible part of the climbing structure that can only be gotten into by an employee with a key. And Katie, who had seen something of ours retrieved from that space once, went off, found an employee, explained the situation, and got them to come back with a key and retrieve the pacifier.
I'm suitably impressed, not just that she knew how to do it, but that she did it to help out a younger child and his mother.