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Tom Callahan originally joined Tessco in 2005, and after a short time away, made his return in 2022 and currently serves as Group Vice President, Infrastructure, Security, & Operations. Previously, Mr. Callahan was at PDI Technologies, where he was responsible for the product development and implementation of a managed security services solution. Before that, Mr. Callahan was the Assistant Vice President overseeing infrastructure and security at the Baltimore Life Insurance Company. Mr. Callahan holds a bachelor’s degree in Computer Information Systems and Business Management from Towson University.