Daniel's face became pale.
For the first time since approaching Ethan, he had no immediate answer.
Twenty minutes earlier, Flight 718 had been preparing to depart from Chicago.
Ethan Miller had arrived at the airport early.
He had checked in online, passed through security, and spent almost an hour waiting near the departure gate.
He was traveling to Washington for a meeting that could change his life.
Ethan was twenty-six years old.
He had graduated from a state university with a degree in computer engineering and had spent the previous three years working on a project involving aviation communication systems.
His project was called SkyBridge.
It was designed to help aircraft and ground emergency teams exchange critical information when conventional communication systems became unreliable.
The idea had come from his father.
Ethan's father, Robert Miller, had been an aircraft maintenance engineer for more than thirty years. He had spent most of his career working at regional airports, repairing aircraft and training younger technicians.
He was not wealthy.
He did not own a large company.
But he understood airplanes better than almost anyone Ethan had ever met.
When Ethan was a child, Robert often brought him to the maintenance hangar on weekends.
He showed him engines, navigation equipment, communication panels, and the complicated systems that allowed an aircraft to operate safely.
He taught Ethan that every small component mattered.
"A plane is not safe because it looks beautiful," Robert used to say. "It's safe because thousands of people do their jobs properly."
Those words stayed with Ethan.
When he was seventeen, his father died unexpectedly after a long illness.
The loss changed everything.
Ethan became quieter.
He spent more time studying.
He took a part-time job repairing computers and used the money to pay for his university expenses.
After graduation, he began developing SkyBridge.
The system was still experimental, but several independent engineers had expressed interest.
One of them introduced Ethan to a technology foundation that supported aviation safety projects.
The foundation invited him to present his work in Washington.
The meeting was scheduled for the following morning.
Ethan had booked his own flight.
He could not afford a luxury airline ticket, but a promotional business-class fare had become available after another passenger canceled.
He purchased it with money he had saved over several months.
He had no idea that the flight would become one of the most difficult experiences of his life.
As Flight 718 prepared for departure, Daniel Brooks received a message from the airline's operations office.
The message concerned a passenger whose name was similar to someone listed in a security alert.
The alert involved an individual who had previously attempted to access restricted aviation equipment.
The person in the alert was named Ethan Miller.
But the photograph attached to the report was several years old.
It showed a man with a similar name, different facial features, and a completely different date of birth.
Daniel did not compare the identification details carefully.
He saw the name.
He saw the words "aviation equipment."
And he assumed the passenger in seat 2A was the person mentioned in the report.
Instead of contacting the airline's security department for verification, Daniel decided to question Ethan himself.
He believed he was preventing a problem before departure.
But he was about to create a much larger one.
Olivia Carter had boarded the aircraft earlier that afternoon.
She was traveling to Washington for an official investigation involving several reports of irregularities in aviation maintenance records.
She had been working on the case for nearly four months.
The investigation involved a private maintenance contractor called AeroCore Solutions.
The company had contracts with several regional airlines and had recently expanded into international maintenance operations.
At first, the investigation had focused on financial irregularities.