I thought Clancey, too. It was surreal.
In the mid 90’s Tom Clancey published “Debt of Honor” and Dale Brown published “Storming Heaven”.
Both books featured planes crashing into the capital.
What was really weird, is that both books were published within a month of each other.
I do remember ‘Debt of Honor’, have heard of, but haven’t read, ‘Storming Heaven’. I remember criticism of the Clancey book as being a ‘how-to’. Lefties burying their heads in the sand as my late mother, also a real Clancey fan, put it. For Clancey (since I haven’t read the other), as usual, he was a step ahead of the terrorist fringe, of these kinds of security issues. His ‘fiction’ seemed as much fiction as fact, and has/had an eerie kind of read on the pulse of these groups. Maybe not so eerie...