 Since his retirement on February 28, 1992, McKusick has served "of counsel" to Pierce Atwood.In July 1992, he served on a pro bono basis as the neutral arbitrator for the determination of the terms under which Long Island would separate from the City of Portland.By appointment of the Massachusetts Supreme Judicial Court, Vincent served in 1995-96 as Master in the liquidation of American Mutual Liability Insurance Co. and an affiliate.