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Bill Koss has extensive experience in sales and ministry advocacy, currently serving as a Ministry Advocate at Mission Aviation Fellowship since January 2017. With a long-standing career at Associated Spring Barnes Group Inc., Bill Koss has held the position of Director of Global Sales since 1979. Bill Koss holds a Master’s Degree in Business Administration with a focus on Management and Operations from Central Michigan University and a Bachelor’s Degree in Business Administration and Management from Northern Illinois University.