This research service focuses on the U.S. Department of Defense (DoD) command and control, communications, computers, intelligence, and surveillance and reconnaissance (C4ISR) budget spending. Included in this service are research, development, testing, and evaluation (RDT&E), procurement, operations and maintenance (O&M), and services. Contract activity for the DoD C4ISR for 2011 is also included. The DoD C4ISR 2013 Budget is comprised of the Army, Navy/Marine Corps, Air Force, and Joint Service spending plans and is included in this study. This study indicates which technology products and services are emphasized in DoD C4ISR budget spending. The base year for financial spending is 2011, and the market forecast is from 2012 to 2017.