Maybe it's our planes." He craned out in Peter's place.

"I can't see anything," he said, "and you can hear they're flying high." Down the train everyone was staring upwards now.

"Christ!" exclaimed Langton suddenly, "some fool's lighting a pipe! Put that match out there," he called.
Other voices took him up.

"That's better," he said in a minute.

"Forgive my swearing, padre, but a match might give us away." Peter was silent, and, truth to tell, terrified.