She turned the volume all the way down, then pressed the COCKPIT button. She found that if she pressed hard enough, it would lock down, causing an LED to illuminate, marked MONITOR . She then experimented with turning the volume up slowly and began to hear speech: Pavel and Sergei communicating with each other in Russian. Of which she, of course, knew not a word. But from time to time she would hear something she recognized, like "jumbo" or "Taipei." And occasionally a voice in English would burst out of their radio: air traffic controllers, she supposed, communicating with them, or with other planes, from towers on the mainland.