Part A - Establishment of System

50 USC 2011 - CIARDS system

(a) In general 

(1) Establishment of system 
There is a retirement and disability system for certain employees of the Central Intelligence Agency known as the Central Intelligence Agency Retirement and Disability System (hereinafter in this chapter referred to as the system), originally established pursuant to title II of the Central Intelligence Agency Retirement Act of 1964 for Certain Employees.
(2) DCI regulations 
The Director shall prescribe regulations for the system. The Director shall submit any proposed regulations for the system to the congressional intelligence committees not less than 14 days before they take effect.
(b) Administration of system 
The Director shall administer the system in accordance with regulations prescribed under this subchapter and with the principles established by this subchapter.
(c) Finality of decisions of DCI 
In the interests of the security of the foreign intelligence activities of the United States and in order further to implement section 403–1 (i) of this title that the Director of National Intelligence shall be responsible for protecting intelligence sources and methods from unauthorized disclosure, and notwithstanding the provisions of chapter 7 of title 5 or any other provision of law (except section 2155 (b) of this title), any determination by the Director authorized by this chapter shall be final and conclusive and shall not be subject to review by any court.

50 USC 2012 - Central Intelligence Agency Retirement and Disability Fund

The Director shall maintain the fund in the Treasury known as the Central Intelligence Agency Retirement and Disability Fund (hereinafter in this chapter referred to as the fund), originally created pursuant to title II of the Central Intelligence Agency Retirement Act of 1964 for Certain Employees.

50 USC 2013 - Participants in CIARDS system

(a) Designation of participants 
The Director may from time to time designate employees of the Agency who shall be entitled to participate in the system. Employees so designated who elect to participate in the system are referred to in this chapter as participants.
(b) Qualifying service 
Designation of employees under this section may be made only from among employees of the Agency who have completed at least 5 years of qualifying service. For purposes of this chapter, qualifying service is service in the Agency performed in carrying out duties that are determined by the Director
(1) to be in support of Agency activities abroad hazardous to life or health; or
(2) to be so specialized because of security requirements as to be clearly distinguishable from normal government employment.
(c) Election of employee to be participant 

(1) Permanence of election 
An employee of the Agency who elects to accept designation as a participant in the system shall remain a participant of the system for the duration of that individuals employment with the Agency.
(2) Irrevocability of election 
Such an election shall be irrevocable except as and to the extent provided in section 2151 (d) of this title.
(3) Election not subject to approval 
An election under this section is not subject to review or approval by the Director.

50 USC 2014 - Annuitants

Persons who are annuitants under the system are
(1) those persons who, on the basis of their service in the Agency, have met all requirements for an annuity under this subchapter or any other Act and are receiving an annuity from the fund; and
(2) those persons who, on the basis of someone elses service, meet all the requirements under this subchapter or any other Act for an annuity payable from the fund.