Listen to an interview with Audrey Fannin, news coordinator for NPR affiliate 88.5 WFDD (Winston-Salem, NC) on December 10, 2013. Richard and Eric discuss the origin of GPS and its vital role today in maintaining synchronized timing for digital networks, financial transactions, power distribution and radio broadcasting. You can also hear Eric read the first three paragraphs of the introduction to GPS Declassified.
http://wfdd.org/post/getting-there-here-local-writer-publishes-book-about-gps