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Well, looks like Dr Carlo Kopp got it right then...
OZBUSDRIVER, i guess yer refering to Dr Carlo Kopp. How did Carlo go with these other comments from 2008 ?....
"...only to have what they perceive to be civilian freeloaders exploit their system and defeat the built in safeguards against hostile use. As things stand, the deployment of the FAA's WAAS will allow anybody with a suitable commercial DGPS receiver to achieve blind bombing accuracies well in excess of what is provided by basic PPS P-code whilst in US airspace.
This is a nightmare for the USAF, responsible for defending US airspace, as the deployment of DGPS will very quickly lead to a virtual complete dependency of the civilian ATC and traffic management system upon DGPS..."
More on the danger of relying on GPS to any extent...
"...terrorists have understood the increasing dependence of the states on modern technologies and hence, are also making technology infrastructures as their potential targets in order to deny the state its usage and to create fear and panic..."
http://www.skyjack.co.il/pdf/jds_3_3_alele_amishra.pdf
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