only the first one

He said, “It still looks like an accident, the first one. Even from this distance, way outside the thing, how many days later, I’m standing here thinking it’s an accident.”
“Because it has to be.”
“It has to be,” he said.
“The way the camera sort of shows surprise.”
“But only the first one.”
“Only the first,” she said.
“The second plane, by the time the second plane appears,” he said, “we’re all a little older and wiser.”

[Don DeLillo, Falling man, 2007]