; and (D) to grieve the decision on the action or removal under paragraph (2) in accordance with the internal grievance process established by the Secretary under paragraph (3). (2) Notice; response; decision (A) In general The aggregate period for notice, response, and decision on an action or removal under subsection (b) may not exceed 15 business days. (B) Response A covered individual receiving a notice under paragraph (1)(A) of an action or removal, as applicable, under subsection (b) shall have not more than 7 business days to respond to the notice. (C) Decision (i) In general The Secretary shall issue a decision on an action or removal, as applicable, under subsection (b) not later than 15 business days after the date on which notice of the action or removal, as applicable, is received by the applicable covered individual under paragraph (1)(A). (ii) Requirements A decision under clause (i)— (I) shall be in writing