; (ii) the failure of the Director of National Intelligence to define in policy the term Executive Agent may be further limiting the ability of the Center to receive sufficient resources to carry out the critical mission of the Center; and (iii) the requirements of the intelligence community and Department of Defense with respect to underground facilities are not adequately being met given the scale and complexity of the problem set and the relatively small amount of funding currently received by the Center. (B) Report Not later than October 1, 2018, the Director of the Defense Intelligence Agency, the Director of National Intelligence, and the Chairman of the Joint Chiefs of Staff shall jointly submit to the congressional intelligence committees and the congressional defense committees a report on— (i) the missions and functions of the Underground Facilities Analysis Center; (ii) the state of the requirements of the intelligence community and Department of Defense with respect to underground facilities and the ability of the Center to meet such requirements; (iii) the effectiveness of the current organizational assignment of the Center to the Director of the Defense Intelligence Agency; (iv) the effectiveness of the current oversight structure between the Center, the Defense Intelligence Agency, the Secretary of Defense, and the Director of National Intelligence; and (v) the resources and authorities necessary to most effectively execute the missions and functions of the Center. (k) Congressional defense committees defined In this section, the term congressional defense committees means— (1) the Committees on Armed Services of the Senate and House of Representatives