(2) If any firefighter employed by such city as a member of its paid fire department on January 1, 1984, and any firefighter reemployed thereafter who, while employed in such department entered military service and is still in military service, dies while employed by the city as a firefighter other than in the line of duty after becoming fifty years of age and before electing to retire, and after serving in the paid fire department of such city for at least twenty-one years, then a pension of at least twenty-five percent of his or her regular pay as defined in section 16-1021, in the form of a straight life annuity, shall be paid to the surviving spouse or minor children of such deceased firefighter. If the deceased firefighter is not survived by a spouse or in the event such surviving spouse dies before the minor children of such firefighter attain the age of majority, such pension benefit shall be paid to the firefighter's minor children until they have attained the age of majority. Each such child shall share equally in the total pension benefit to the age of majority, except that as soon as a child attains the age of majority, such pension benefit to such child shall cease and be reallocated among the remaining minor children until the last remaining child dies or reaches the age of majority. In the event that the actuarial equivalent of the pension benefit payable under this subsection exceeds the retirement value at the time of the first payment, the city shall utilize such funds as may be necessary from the unallocated employer account of the retirement system to purchase or provide for the required pension benefit. In the event a deceased firefighter described in this subsection is not survived by a spouse or minor children, his or her death benefits shall be provided under the provisions of subsection (1) of this section as if such firefighter were not employed by the city on January 1, 1984.