"First time without Mom sitting next to me."

"That counts. The secret is that most adults are improvising, too."

Caleb glanced at his mother. "I've suspected that for years."

They all laughed, and the small joke loosened something in Elena's face. She crouched beside him, although he had recently begun objecting to being crouched beside in public. She checked that he had his charger, his folder, and the envelope. Then she hugged him and whispered, "You can be nervous and brave at the same time."

"I know."

"Call when you land."

"I know."

"I love you."

"That one I know the most."

He turned toward the security entrance before either of them could change their minds. Lidia walked beside him, explaining each step with the plain efficiency Elena had hoped for. At the conveyor belt Caleb emptied his pockets, removed his headphones, and watched his blue folder disappear into a black tunnel. For one absurd instant he thought the machine might somehow swallow Iris's envelope. The bag came out on the other side unchanged.

Beyond security the terminal smelled of coffee, warm bread, perfume, and floor cleaner. A long wall of windows revealed ground vehicles crawling beneath airplane wings. Caleb watched a worker guide a baggage cart through a narrow space with more concentration than many drivers brought to busy highways. Above him, the loudspeaker announced a delay for a flight to Phoenix. Somewhere a child cried. Somewhere someone shouted a final goodbye into a phone.

At the gate, the assigned escort was late. Lidia checked her tablet and frowned. "Departure team is tied up with a weather diversion. You're all right sitting here with me for a few minutes?"

"Sure."

She seated him near the counter where she could see him, then dealt with a passenger trying to rebook a connection. Caleb opened his flight book to a chapter about winglets but found himself reading the same paragraph four times. He looked around instead. A man wearing a green baseball cap carefully counted medication bottles into a pouch. A couple in matching hiking boots were arguing about whether they had packed a camera battery. A little girl in bright orange sneakers sat cross-legged beside her father and invented stories about the clouds outside.

At the far end of the waiting area, a tall woman in a cream-colored coat spoke into a headset with an expression of polished dissatisfaction. Her suitcase, a hard-sided charcoal case with gold fittings, stood beside her like a silent employee. She was perhaps fifty, with silver-blond hair cut into a precise bob and a dark red scarf knotted at her throat.

"I won't rearrange my schedule because they rearranged their priorities," she said into the microphone. "Tell the board I can join the first twenty minutes from the air. No, do not apologize on my behalf."

Caleb looked away. He knew what it felt like to be overheard in places where everybody was too close together, and he had learned that curiosity did not entitle him to another person's conversation. But the woman kept talking in a voice designed to reach through noise, and fragments drifted across the seats. She had a meeting. Someone had promised a private car. A man named Arthur had failed to handle something. She was tired of being told what was impossible.

The woman ended the call and approached the counter. "Who is supervising this gate?"

Lidia lifted her eyes from the screen. "I am handling guest services. What can I do for you?"

"I was assured this aircraft would have a premium cabin configuration."

"It does."

"I want to verify the seating. I have an important call to take before departure."

"You can check your seat assignment in the airline app, ma'am. I'd be happy to assist if there's a problem."

The woman looked at Caleb, then at his boarding pass resting on his knee. "They've really filled every space this morning, haven't they?"

Lidia did not reply to the remark. She asked for the woman's name and pulled up the reservation. "Veronica Hale. Yes. Seat 3B, confirmed."

"Three B?" Veronica's voice sharpened. "No. I specifically requested the window."

"Your ticket shows an aisle seat in the first row of this aircraft's premium cabin."

"That is not what my assistant booked."

"I can check whether another window is available, but I can't guarantee a change."

Veronica's gaze returned to the small boy with the blue folder. She looked at his sneakers, the backpack on his lap, and the boarding pass. Caleb had the uncomfortable sensation that she was measuring not where he sat but whether he belonged in the picture she had formed of the cabin.

"You could make a simple adjustment," she said, lowering her voice without softening it. "Someone that age doesn't need a window for work."

Lidia followed the direction of her glance. "Any seat change would require the other passenger's agreement."

"Surely you understand discretion."

"I understand the reservation system."

The exchange ended when another employee arrived with a stack of printed flight manifests. Veronica stepped away, irritated but not defeated. Caleb did not understand why she had looked at him. People requested seat swaps all the time, he'd been told. Sometimes they were kind requests, made by parents trying to sit beside children or couples separated by booking errors. He decided not to worry until there was something specific to worry about.

A young flight attendant named Owen Pike came through the gate carrying a paper cup. He greeted Lidia and checked Caleb's details. "I've got him," he said. "His escort is covering another departure. We'll make sure he's comfortable."

Lidia's face relaxed. She reviewed the handoff with Owen and took one last look at the documents. "Seat 3A. Correct?"

"Three A," Owen confirmed. "We're set."

Caleb slid the boarding pass into the folder. Everything felt wonderfully official. The folder had been examined, the seat had been confirmed, and the employee assigned to care for him knew his name. He sent his mother a message: At gate. Everything okay. She replied so quickly he suspected she had been holding the phone and staring at it.

The boarding announcement crackled overhead. Priority passengers began lining up. Veronica Hale rose first, smoothing her coat and pulling her suitcase toward the rope. A man near Caleb offered to let her pass, and she accepted without acknowledging him. Caleb waited for Owen's signal and then joined the short line a few places behind her.

On the jet bridge the air grew warmer and smelled faintly of rubber and fuel. The tunnel bent toward a door opened onto the plane. Beyond it, a flight attendant welcomed passengers in the professional, careful voice of someone starting another day that was supposed to go exactly according to plan.

Caleb stepped across the metal threshold holding his blue folder. For the first time since leaving home, his nervousness gave way to uncomplicated excitement.

He had been assigned a place. He had proof. He had somewhere important to go.

CHAPTER THREE — THE WINDOW

The front cabin looked smaller than Caleb had expected. In magazines, the seats appeared to float inside enormous private rooms. On this particular airplane there were twelve wide seats arranged in three rows, with narrow shelves for drinks and windows that framed pieces of a gray runway. The fabric was dark blue. The overhead lights glowed gently. A folded blanket rested in every seat, and the carpet was soft enough to make Caleb worry about dragging mud onto it.

He found row three without trouble. The letter A appeared above the window, exactly where he expected. He placed his backpack beneath the seat, lifted the blue folder onto the small side table, and sat down. He immediately noticed a tiny diagram near the armrest explaining how the seat reclined. It had a little arrow and a simple drawing of a person. Iris would have enjoyed the drawing. She might have complained that the illustration was misleading or that the controls should be reachable from an awkward angle. Caleb felt the first small ache of wishing she were there.

He touched the button and the seat shifted backward with a quiet mechanical hum. He returned it to its original position before anybody noticed. Then he pressed his hand to the window. On the pavement below, a worker in orange ear protection gestured to a baggage vehicle. The worker moved deliberately, as though small movements mattered. Caleb thought about all the jobs required to make a single flight possible: the mechanics, the cleaners, the drivers, the people who guided passengers to gates, the pilots, the controllers whose voices traveled through headsets. His aunt used to say that an airplane was not a machine so much as an agreement among strangers to be careful together.

He had just taken his book from the backpack when a shadow fell across his knees.

"That is my seat," a woman said.

Caleb looked up. Veronica Hale stood in the aisle, her cream coat draped over one arm, her scarf loosened, her suitcase upright beside her. She had removed her headset. Without it she looked more directly at him, as if she had been preparing for this encounter since the gate.

"I think you're in B," Caleb said. He tried to sound helpful. "That's the one next to me."

"I know what my assistant purchased. Get out of the window seat."

The sentence struck him more sharply than the words themselves seemed to justify. At home, adults gave instructions all day. They told him to move his bicycle, lower the volume, put away the dishes, and finish his homework. This felt different because the woman offered no explanation that he could test, no reason beyond the expectation that he would obey.

"My boarding pass says three A," he replied.

"There has obviously been a mistake."