At the northern edge of Bergenfield International Airport, a vast maintenance hangar hummed with the restless energy of mechanics and the low vibrations of machinery. A Aurelius A900 turbofan engine rested on a sturdy trolley beneath harsh fluorescent lights, reflecting the weary faces of the technicians who had been laboring through the night. A red tool chest stood open nearby, its drawers full of wrenches, screwdrivers, and gauges. Every few seconds the clock on the wall ticked loudly, amplifying the tension in the room. The smell of heated metal and kerosene filled the air, mixing with the faint scent of sweat.