(1) Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4914, 74-4915 and subsection (23) of Kan. Stat. Ann. § 74-4902, and amendments thereto, the normal retirement date for all security officers, as defined by paragraph (a) or (b) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, with at least three consecutive years of service as such security officer immediately preceding the date of retirement, shall be the first day of the month coinciding with or following the attainment of age 55, and commencing July 1, 2000, the first day of the month coinciding with or following the date that the total of the number of years of credited service and the number of years of attained age of the security officer is equal to or more than 85. Any such security officer may retire before such normal retirement date on the first day of any month coinciding with or following the attainment of age 50 or completion of 10 years of credited service, whichever occurs later.

(2) (a) Except as otherwise provided in paragraph (b) of this subsection (2), any security officer, as defined by paragraph (a) or (b) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, who retires before the normal retirement date shall receive an annual retirement benefit equal to the annual retirement benefit payable had such security officer retired on the normal retirement date but based upon such security officer’s final average salary and years of participating and prior service credited to the date of actual retirement reduced by an amount equal to the product of (i) such annual retirement benefit payable had such security officer retired on the normal retirement date, multiplied by (ii) the product of .6% multiplied by the number of months difference, to the nearest whole month, between such security officer’s attained age at the time of retirement and age 55.

(b) Any security officer, as defined by paragraph (a) or (b) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, who retires on or after July 1, 1982, and prior to July 1, 1987, before the normal retirement date shall receive an annual retirement benefit equal to the annual retirement benefit payable had such security officer retired on the normal retirement date but based upon such security officer’s final average salary and years of participating and prior service credited to the date of actual retirement reduced by an amount equal to the product of (i) such annual retirement benefit payable had such security officer retired on the normal retirement date, multiplied by (ii) the product of .3% multiplied by the number of months difference, to the nearest whole month, between such security officer’s attained age at the time of retirement and age 55.

(c) Any security officer, as defined by paragraph (a) or (b) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, who retires on or after July 1, 1990, before the normal retirement date shall receive an annual retirement benefit equal to the annual retirement benefit payable had such security officer retired on the normal retirement date but based upon such security officer’s final average salary and years of participating and prior service credited to the date of actual retirement reduced by an amount equal to the product of (i) such annual retirement benefit payable had such security officer retired on the normal retirement date, multiplied by (ii) the product of .2% multiplied by the number of months difference, to the nearest whole month, between such security officer’s attained age at the time of retirement and age 55.

(3) Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4914, 74-4915 and subsection (23) of Kan. Stat. Ann. § 74-4902, the normal retirement date for all security officers, as defined by paragraph (c), (d), (e) or (f) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, with at least three consecutive years of service as such security officer immediately preceding the date of retirement, shall be the first day of the month coinciding with or following the attainment of age 60, and commencing July 1, 2000, the first day of the month coinciding with or following the date that the total of the number of years of credited service and the number of years of attained age of the security officer is equal to or more than 85. Any such security officer may retire before such normal retirement date on the first day of any month coinciding with or following the attainment of age 55 or completion of 10 years of credited service, whichever occurs later.

(4) (a) Except as otherwise provided in paragraph (b) of this subsection (4), any security officer, as defined by paragraph (c), (d), (e) or (f) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, who retires before the normal retirement date shall receive an annual retirement benefit equal to the annual retirement benefit payable had such security officer retired on the normal retirement date but based upon such security officer’s final average salary and years of participating and prior service credited to the date of actual retirement reduced by an amount equal to the product of (i) such annual retirement benefit payable had such security officer retired on the normal retirement date, multiplied by (ii) the product of .6% multiplied by the number of months difference, to the nearest whole month, between such security officer’s attained age at the time of retirement and age 60.

(b) Any security officer, as defined by paragraph (c), (d), (e) or (f) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, who retires on or after July 1, 1982, and prior to July 1, 1987, before the normal retirement date shall receive an annual retirement benefit equal to the annual retirement benefit payable had such security officer retired on the normal retirement date but based upon such security officer’s final average salary and years of participating and prior service credited to the date of actual retirement reduced by an amount equal to the product of (i) such annual retirement benefit payable had such security officer retired on the normal retirement date, multiplied by (ii) the product of .3% multiplied by the number of months difference, to the nearest whole month, between such security officer’s attained age at the time of retirement and age 60.

(c) Any security officer, as defined by paragraph (c), (d), (e) or (f) of subsection (1) of Kan. Stat. Ann. §§ 74-4914a and amendments thereto, who retires on or after July 1, 1990, before the normal retirement date shall receive an annual retirement benefit equal to the annual retirement benefit payable had such security officer retired on the normal retirement date but based upon such security officer’s final average salary and years of participating and prior service credited to the date of actual retirement reduced by an amount equal to the product of (i) such annual retirement benefit payable had such security officer retired on the normal retirement date, multiplied by (ii) the product of .2% multiplied by the number of months difference, to the nearest whole month, between such security officer’s attained age at the time of retirement and age 60.