Great book! Warhead takes place in Alaska at the height of the spate of left-wing domestic terrorism aimed at upsetting the "establishment." I enjoyed the book immensely and found the story to be credible given how things were in flux at the time.
I myself was an Air Defense Artillery soldier in the 1980s, although I arrived after Nike Hercules but before Patriot. With that being said, I do remember the mountain site from when my father was assigned to Elemendorf AFB and we lived in Anchorage. I even had a newspaper from the Nike unit assigned there for the longest time (it must have been one of the last produced).
The place names and characterizations used by Don Neal brought me back to my time spent in Anchorage and Wasilla. The story itself is a great one and well worth reading.