It was May 29 and I was coming through Houston on the way back from the Galapagos—kind of long-way-around routing, but what the hey. I’d gotten up at three a.m. in Quito to take the flight out so I was running on coffee and hope. My flight, Continental 2099, left at 2:20. I was ready to get back to Guadalajara. Swarm aboard the Embraer, fasten seat belt, haul out book. Normally the stews go through the usual about overhead bins, seatbelts, and the rest. They have to do it, everybody has heard it a thousand times, but the crew is...