We walk for another couple of hours. This time, the silence is rife with fear and irritability.

Tom drops his bag to the ground. "Okay, let's take a break." He sits on his pack and opens a bottle of water. "Emily's right. We're going to have to tell everyone else about the airstrip and dock. And if we can't catch the plane, we're going to need the supplies it drops. But I don't want to tell them about everything else. It will only cause undue panic."

"I agree," ...