Just checked it out on Amazon and copy on its way to me too, so now there are two of us Pete

On the author's own website he writes:
"My new book “Flying for GPS” has been published. It’s available online from Amazon, Barnes and Noble and Xlibris. The Ebook version will be available soon. It is a chronicle of my role in the development and promotion of the Global Positioning System. Spanning 50-years I spent 8 months of my life flying 2 ½ million miles as a missionary for GPS and as a developer of user equipment. I kept an extensive log of all my flights and it enabled me to recreate much of what happened to GPS during my career, and my impressions of why these events occurred. The book is about user equipment evolution from expensive, complex and voluminous military sets to today’s low-cost chips buried in our cell phones. It traces a system designed primarily for military and civilian aircraft, ships and land vehicles to an essential utility of everyday life, enabling new businesses, more safety and the ability to track everything that moves. In parallel with the evolution of GPS is that of commercial air travel as I experienced it, from flying on a PanAm 707 in 1963 to an Air France A380 in present day."
I like it that he has been a pilot and brings an everyman approach to the subject, you can read the first 40 pages at
http://books.google.co.uk/books?id=ZGSnAwAAQBAJ&pg=PA3&lpg=PA3&dq=flying+for+gps+len+jacobson&source=bl&ots=b9mZQTAe6G&sig=eDd2eNqZ1GXqVPI3110CYjnAbZg&hl=en&sa=X&ei=NbOVU_HsOuXb7AbgnICoAg&ved=0CD8Q6AEwBA#v=onepage&q=flying%20for%20gps%20len%20jacobson&f=false