Aaron pulled up a map on the projector behind him. “The Xs all mark spots where the recent attacks have occurred—the ones we know about that are certainly ours. This is just America, but a look at other countries and continents would show a similar pattern.”

Cadence turned to study the map. All of the Xs seemed to be in rural locations, all near major highways, and some of them close to each other.

“What do you mean by strange locations?” Christian asked.

The ...