Section 211.5 - Responsibilities(a) Pursuant to subsection (e)(4) of section 358, the Deputy Secretary of Defense is designated as the senior officer. Only the senior officer may convey to the Secretary of Transportation a determination that a project filed with the Secretary of Transportation pursuant to 49 U.S.C. 44718 would result in an unacceptable risk to the national security of the United States.(b) Pursuant to subsection (b)(1) of section 358, the Under Secretary of Defense for Acquisition, Technology, and Logistics is designated as the senior official. Only the senior official may provide to the senior officer a recommendation that the senior officer determine a project filed with the Secretary of Transportation pursuant to 49 U.S.C. 44718 would result in an unacceptable risk to the national security of the United States.(c) Pursuant to subsection (e)(1) of section 358, the Deputy Under Secretary of Defense (Installations & Environment), in coordination with the Deputy Assistant Secretary of Defense (Readiness) and the Principal Deputy Director, Operational Test and Evaluation, shall review a proper application for a project filed pursuant to 49 U.S.C. 44718 and received from the Secretary of Transportation and provide a preliminary assessment of the level of risk of adverse impact on military operations and readiness that would arise from the project and the extent of mitigation that may be needed to address such risk.(d) Pursuant to subsection (b)(1) of section 358, the Office of the Deputy Under Secretary of Defense (Installations & Environment) is designated as the lead organization. Under the authority, direction, and control of the Under Secretary of Defense for Acquisition, Technology, and Logistics, there is, within the Office of the Deputy Under Secretary, a DoD Siting Clearinghouse. The Clearinghouse: (1) Shall have a governing board organized in accordance with DoD Instruction 5105.18, DoD Intergovernmental and Intragovernmental Committee Management Program.(2) Has an executive director who is a Federal Government employee, appointed by the Deputy Under Secretary of Defense (Installations & Environment).(3) Performs such duties as assigned in this part and as the Deputy Under Secretary directs.