§ 559. Application. For purposes of accidental disability retirement
only, a sheriff, undersheriff or deputy sheriff engaged directly in
criminal law enforcement activities that aggregate fifty per centum of
his or her service and are police officers under the criminal procedure
law who last joined a public retirement system of the state or a
municipality thereof, on or after July first, nineteen hundred
seventy-three, but prior to January first, nineteen hundred eighty-five,
shall be subject to the provisions of article eleven of this chapter
that apply to members of the state and local police and fire retirement
system.