The Executive Secretariat (S/ES), comprised of the Executive Secretary and four Deputy Executive Secretaries, is responsible for coordination of the work of the Department internally, serving as the liaison between the Department's bureaus and the offices of the Secretary, Deputy Secretary, and Under Secretaries. It also handles the Department's relations with the White House, National Security Council, and other Cabinet agencies.
The Operations Center (S/ES-O) is the Secretary's and the Department's communications and crisis management center. Working 24 hours a day, the Operations Center monitors world events, prepares briefings for the Secretary and other Department principals, and facilitates communication between the Department and the rest of the world. The Operations Center also coordinates the Department's response to crises and supports task forces, monitoring groups, and other crisis-related activities.