(3) is a citizen of the United States; is entitled, after suspension and before removal, to
(A) a written statement of the charges against him within 30 days after suspension, which may be amended within 30 days thereafter and which shall be stated as specifically as security considerations permit;
(B) an opportunity within 30 days thereafter, plus an additional 30 days if the charges are amended, to answer the charges and submit affidavits;
(C) a hearing, at the request of the employee, by an agency authority duly constituted for this purpose;
(D) a review of his case by the head of the agency or his designee, before a decision adverse to the employee is made final; and
(E) a written statement of the decision of the head of the agency.