NASHUA -- Stephen A. Mack, 42, a resident of Nashua, formerly of Groton, died unexpectedly Wednesday, May 23, at St. Joseph Hospital in Nashua. He was the husband of Loreta (Naoe) Mack.He was born in Cambridge, Mass., April 29, 1965, son of Richard and Barbara (Jenemann) Mack of Naples, Fla. He grew up in Groton, and graduated from high school in Groton in 1984, where he played hockey and soccer.He had made his home in Nashua for many years and was married in September.Mr. Mack worked as an electrician for a few years and later worked as a chef for many years.He was an avid sports fan and loved the Red Sox, Boston Bruins and the New England Patriots.Besides his wife and parents, he is survived by a daughter, Samantha Mack of Nashua; a brother and sister-in-law, Bob and Patricia Mack of Weston, Mass.; two sisters and a brother-in-law, Margie and Ray Wauford of Westford, and Dorothy Janes of Groton; his father-in-law and mother-in-law, Francisco and Nettico Naoe of the Philippines; as well as several nieces and nephews.