Don Kellermann began a career in sales in 1995 and has since held various managerial positions, including Sales Manager at Cavalier Telephone, Chesapeake Contracting, and Airband Communications, as well as Senior Sales Manager at Comcast Business Solutions. In 2018, Don joined CES Security, where they currently serve as a Business Development Manager, assisting Property, Hospitality, and General Managers with security guard personnel. Don's educational background includes attending Baltimore Lutheran High from 1980 to 1986.
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