Interim Report of the Defense Science Board (DSB) Task Force on the Survivability of Systems and Assets to Electromagnetic Pulse (EMP) and other Nuclear Weapon Effects (NWE) [open pdf - 398KB]
"The DSB [Defense Science Board] Task Force is examining the ability of DoD's [Department of Defense] forces and critical supporting capabilities (e.g., communications, power) to survive, operate, and succeed on/in battlefields/battlespaces where nuclear weapons are threatening or are being employed. The most likely case(s) are use of nuclear weapons by others. Although fratricide is the least likely case, ignoring it is risky. Moreover, U.S. nuclear forces require an increased premium on reliability and survivability as further reductions occur. Understanding nuclear weapons effects (NWE) and mitigation options is a central military-technical matter. See Table 1 at the end of the report for a notional matrix of the scope of the problem and the Task Force's assessments to date."
Summary Report No. 1
Office of the Under Secretary of Defense for Acquisition, Technology, and Logistics: http://www.acq.osd.mil/