1. Short title This Act may be cited as the Defense Support for Cyber Emergencies Response Act of 2023 . 2. Selected Reserve order to active duty to respond to a significant cyber incident Section 12304 of title 10, United States Code, is amended— (1) in subsection (a), by striking for any named operational mission ; (2) by redesignating subsections (c) through (j) as subsections (d) through (k), respectively; (3) by inserting after subsection (b) the following new subsection: (c) Authority relating to significant cyber incidents When the Secretary of Defense or the Secretary of the department in which the Coast Guard is operating determines that it is necessary to augment the active armed forces for the response of the Department of Defense or other department under which the Coast Guard is operating, respectively, to a covered incident, such Secretary may, without the consent of the member affected, order any unit, and any member not assigned to a unit organized to serve as a unit of the Selected Reserve (as defined in section 10143(a) of this title), under the respective jurisdiction of such Secretary, to active duty for not more than 365 consecutive days. ; (4) in paragraph (1) of subsection (d), as redesignated by paragraph (2), by inserting or subsection (c) after subsection (b) ; (5) in subsection (g), as redesignated by paragraph (2), by inserting or subsection (c) after subsection (a) ; (6) by amending subsection (h), as redesignated by paragraph (2), to read as follows: (h) Termination of duty (1) Whenever any unit of the Selected Reserve or any member of the Selected Reserve not assigned to a unit organized to serve as a unit, or any member of the Individual Ready Reserve, is ordered to active duty under authority of subsection (a), the service of all units or members so ordered to active duty may be terminated by— (A) order of the President