If you are interested, I would start with the previous book “Debt of Honor”, which sets up “Executive Orders”.
Let's just say that “Debt of Honor” ends with the wish of being able to start-over actually happening, while “Executive Orders” shows how the main characters actually go about setting everything up from scratch.
Both books are good summer reads, especially if you like political/military/techno thrillers. Hope that helps.
I liked Clancy’s early stuff. I think I’ll take your advice. I’ve been doing old westerns this summer, and an adventure would be just about what the doctor ordered. Thanks.