The Deputy Assistant to the Secretary of Defense for Nuclear Matters (DATSD(NM)) fulfills the nuclear weapons roles, responsibilities, and functions for the Assistant to the Secretary of Defense for Nuclear and Chemical and
Biological Defense Programs (ATSD(NCB)) and is supported
by a strong staff of both military and civilian personnel.

The Office of the DATSD(NM) (ODATSD(NM)) is the focal point of all DoD and OSD activities and initiatives involving nuclear weapons, while serving as the primary point of contact for the Congress, the interagency, and the public. It is comprised of representatives from all aspects of the community, such as the U.S. Navy, the U.S. Air Force, the United States Nuclear Command and Control Systems Support Staff, the Defense Threat Reduction Agency, the Department of Energy, the National Nuclear Security Agency, Los Alamos National Laboratory, Lawrence Livermore National Laboratory, Sandia National Laboratories, Kansas City Plant, and the National Security Agency.