Kate twisted in discomfort, slamming her elbow into the back of Darby’s head. “Ouch!” Darby yelped. “You can’t keep moving all the time, Kate. There’s only so much room!”

Kate sighed. It was pointless to apologize again. Last night, Tracy told her that she was banned from the row they had shared. Airplane seats just were not meant for two teenage girls, especially one like Kate. She was at least five inches taller than most girls her age. Being tall was hard enough before the force fields came down; it was even worse now. Her size made it impossible to fit into small spaces, which were the only safe places to be anymore.

Kate got up and scooted through the crammed aisle in the dark. All the seats were double capacity and many were filled by adults with small sleeping children on their laps.

“And just where do you think you are going?” asked a deep voice.

It was stupid for her to think she would make it to the open door hatch without detection. “I need some air, space, and sleep, Mr. Jacks,” she whispered, exasperated.

“And just where do you think you’ll find sleep out there in the fields, Kate?” Mr. Jacks sat up and shifted his bulldog’s weight from his stomach to his lap. The old dog groaned in protest. “I’ve seen that look before, Kate,” Mr. Jacks continued. “You almost got yourself killed the last time you tried it. Please, honey, stay here. Get some rest. Lay down on the aisle floor for sleep . . . it’s safer.”

“I can’t take another night like this. I’ve got to try.” She rushed out the open hatch and jumped down to the platform of the metal rolling stairs. They were not tall enough to reach the edge of the doorway as they should. They were made for smaller planes.

She ran past one plane after another. They were all parked in the hangar, just as they had been the day the force fields came down around the airport, trapping fifteen hundred people inside. The force fields seemed to be electromagnetic prisons, although no one knew for sure what they were made from or for what purpose. They appeared around cities and small towns, around farms and islands, and even around tiny villages in the middle of Africa. They were everywhere—and nobody knew who put them there.

At first, when the electricity still ran and stranded passengers could get television and wireless signals, rumors spread that it was some strange homeland security protective measure, since the first appearance of the strange, blue-tinged force fields occurred only around airports. By the end of the day, the rumors stopped and the terror spread as people started disappearing, popping out of existence right before the eyes of others. Nobody knew where they had gone or if they were still alive.

It was the same every day now—if you got caught in the open for too long, you could pop right out. It was certainly one way to leave the airport.

Kate was determined to find a safer way out. The airport food supplies were almost gone. She was getting desperate; they all were. Even if a way out led to another zone, trapped by another field, it

tell what to put in each box pls