The entire first book was re-written and modified after 9-11. I was literally ready to roll with Book One just before September and had to go back and work that into the plot line throughout.
Remember, the book is written in the future, about 4-5 years from todays happenings. Writing it as a series allows me to work subtle and not so subtle references in.
For example, in Chapter TWo of Book Two, prior to this excerpt, the President uses the fact that Israeli Prime Minister Sharon implemented and initiative to arm 60,000 more Israelis with Conceal Carry permits in an effort to fight the terror of 2001-2002, hoping that someone armed would be near a terror attack when it occurred to interdict it. That actually just happened a few weeks ago and it is already working. It made a good reference to these actions later by our own President when faced with abject, on-going terror attacks on American soil. He speaks eloquently about it when informing the cabinet of his decisions.
Regards.