U.S. Defense Information Systems Agency
701 S Court House Rd
Arlington, VA 22204-2199
The Defense Information Systems Agency is a combat support agency responsible for planning, engineering, acquiring, fielding, and supporting global net-centric solutions to serve the needs of the President, Vice President, the Secretary of Defense, and other DoD Components, under all conditions of peace and war.
U.S. Defense Logistics Agency
The Defense Logistics Agency supplies the nation’s military services and several civilian agencies with the critical resources they need to accomplish their worldwide missions. DLA
provides wide-ranging logistical support for peacetime and wartime operations, as well as
emergency preparedness and humanitarian missions.
U.S. Defense Advanced Research Projects Agency
DARPA’s mission is to maintain the technological superiority of the U.S. military and prevent technological surprise from harming our national security by sponsoring revolutionary, high-payoff research that bridges the gap between fundamental discoveries and their military use. (From the DARPA mission statement.)