ROBERT L. POPP, PhD, is currently an Executive Vice President of Aptima, Inc., and formerly a senior executive within the Defense Department, serving in the Office of the Secretary of Defense and Defense Advanced Research Projects Agency (DARPA). He is an expert in national security and counter-terrorism, authoring numerous scientific papers and providing many technical briefings and interviews on the subject. He is a member of the Defense Science Board (DSB), Senior Associate for the Center for Strategic and International Studies (CSIS), Senior Member of the IEEE, member of ACM and AAAS, foun...