On the FlightAware website, Kathy checked the progress of the small plane her husband Chuck was piloting to Chicago. With a few clicks, she could track when he took off, where his flight was at any moment, and exactly when he would land. A few decades earlier when Chuck was a pilot in West Africa, Kathy’s only contact had been a high-frequency radio. She recalls one occasion when 3 days had passed before she was able to reach him. She had no way of knowing that he was safe but unable to fly because the airplane had been damaged.