At the airport, people saw a man in uniform lying on the floor with a German Shepherd sitting beside him. Everyone was astonished to learn why the animal was barking and growling at those around him. The airport bustled that morning. Some were rushing to board, others were queuing for coffee, and others were simply staring out the windows, watching the planes take off. But in one corner of the terminal, something strange was happening. People began to stop, whisper, and take out their phones. On