From the late 1950’s to 1983 Donald (Don) Coates held the positions of branch secretary, chairman and conference delegate of the Parramatta and later Eastwood Branches. He also served as a member of the Executive for a number of years. On reaching commissioned rank he became vice-president and then president of the Commissioned Officers Police Association from May 1987–May 1991. Don was attested in October 1952 and retired on 28 May 1991 with the rank of superintendant. He died on 29 May 2019. He passed away on 25 May 2019.