Day of Wrath was very chilling too. Reading it, I was afraid it would become an instruction manual for terrorists.
A lot of people have that concern. But, honestly, many of those bastards are university-educated (often in the U.S.), are smart and are clever. They aren't all kindergarten drop-out goathumpers living in caves. I doubt there's much that could be written that they haven't already conceived.
The new and HUGE worry has to be C4 delivered via drone to a big event. Who needs to evade the metal detectors at venue entrance lines when you can easily airlift a good size bomb over the fence?
“Reading it, I was afraid it would become an instruction manual for terrorists.”
It was a hard read, I had to skip some sections. But they invented that stuff, the book’s not telling them anything they don’t already know.