Their marriage had never been the effortless arrangement acquaintances imagined when they saw photographs of them smiling at professional award ceremonies. There had been canceled birthdays, early flights, difficult conversations about how much work was too much, and evenings when one of them came home carrying a terrible story that could not be repeated in public. There had also been rituals they guarded fiercely: Sunday breakfast without phones, a walk after dinner whenever weather permitted, and a rule against going to sleep while still arguing about something important. Their anniversary had become one of those rituals. The fifteenth was different because they had made a promise to celebrate the life they had built rather than another accomplishment they could put on a résumé.
Daniel was forty-eight, with neatly cut salt-and-pepper hair and a habit of listening long enough that impatient people sometimes mistook him for indecisive. At the Federal Aviation Administration, he was a senior air carrier safety inspector whose expertise lay in examining whether an airline's operating practices matched the obligations written into its manuals and federal requirements. He could recognize a procedural failure from one small discrepancy, but he was also known for giving people an opportunity to explain what had happened before deciding what it meant. His authority came through a regulated process, not personal command. He never forgot that distinction, even when people around him treated an inspector's credentials as a kind of magic key.
Alana had a medical degree and a doctorate in aerospace engineering, an uncommon combination that had led her toward the study of human performance in aviation. She advised federal and industry teams on fatigue, decision-making, communication breakdowns, and the ways stress could distort perception. In her lectures, she often held up a photograph of a cockpit without identifying the aircraft and asked experienced crews what they saw. Their answers varied dramatically depending on what she had told them beforehand. Her lesson was always the same: believing you have recognized a pattern is not the same as proving it exists.
At the gate, Daniel set their passports and mobile boarding passes on the counter. The agent, a young man named Evan Pierce, checked the reservation and welcomed them aboard Global Air Flight 112 to Paris Charles de Gaulle. His computer showed two paid premium seats, 2A and 2B, booked eight weeks earlier under the same record locator. He wished them a happy anniversary when Alana mentioned it, and she smiled at his courtesy. Nothing in the reservation suggested a problem, and Evan would later remember how ordinary that moment had been.
Their tickets were for Global Air's Signature First cabin, a quiet section near the front of the Boeing 777-300ER with wide lie-flat seats, privacy dividers, and enough room to sleep without brushing shoulders with a stranger. Alana had selected the seats herself after an evening of comparing cabin diagrams, joking that