; and (C) based in whole or in part on the contribution of the employee to the agency in which the employee performed such service, as communicated from that agency to the employing agency of the employee. (c) Program requirements for rotational service (1) In general An employee serving in a cyber workforce position in an agency may, with the approval of the head of the agency, submit an application for detail to a rotational cyber workforce position that appears on the list developed under section 3(b). (2) Selection and term (A) Selection The head of an agency shall select an employee for a rotational cyber workforce position under the rotational cyber workforce program in a manner that is consistent with the merit system principles under section 2301(b) of title 5, United States Code. (B) Term Except as provided in subparagraph (C), and notwithstanding section 3341(b) of title 5, United States Code, a detail to a rotational cyber workforce position shall be for a period of not less than 180 days and not more than 1 year. (C) Extension The Chief Human Capital Officer of the agency to which an employee is detailed under the rotational cyber workforce program may extend the period of a detail described in subparagraph (B) for a period of 60 days unless the Chief Human Capital Officer of the employing agency of the employee objects to that extension. (3) Written service agreements (A) In general The detail of an employee to a rotational cyber position shall be contingent upon the employee entering into a written service agreement with the employing agency under which the employee is required to complete a period of employment with the employing agency following the conclusion of the detail that is equal in length to the period of the detail. (B) Continued service agreements A written service agreement under subparagraph (A) shall not supersede or modify the terms or conditions of any other service agreement entered into by the employee under any other authority or relieve the obligations between the employee and