Armed with Science , the U.S. Department of Defense Science Blog, reports that “scientists and engineers from the Defense Advanced Research Projects Agency took over the Pentagon center courtyard last week, defying gray skies and a steady drizzle to demonstrate to future users here some of their most bleeding-edge work for national security.”  

“Two of the Defense Department’s top technology leaders also were there to speak with media members about DARPA’s mission — Stephen P. Welby, assistant secretary of defense for research and engineering, and DARPA director Dr. Arati Prabhakar.”  

“In individual tents situated neatly around the courtyard, DARPA program managers and staff showed off and explained more than 60 of the agency’s programs involving air systems, biology, counterterrorism, cyber, ground warfare, maritime systems, microsystems, space and the electromagnetic spectrum.”