D.C. Mun. Regs. tit. 7, r. 7-2528
Any officer or member or the Metropolitan Police force or the Fire Department who completes twenty (20) years of service (or twenty-five (25) years of service and attains the age of fifty if appointed after February 15, 1980), after giving at least sixty (60) days written advance notice to his or her department or agency head, stating his or her intention to retire optionally (Optional Retirement), and stating the date on which he or she will retire, and if all other conditions are met, shall be retired effective on the date requested.
Any member of the Metropolitan Police force or the Fire Department having reached the age of sixty (60) years shall, in the discretion of the Mayor, be retired.
The effective date of retirement for officers and members who retire on disability shall be determined by the Board and made known upon the issuance of the final retirement Order.
D.C. Mun. Regs. tit. 7, r. 7-2528