David Hartzell has been named president and CEO of Mack Defense LLC, a position he had filled on an interim basis since September 2017.

David Hartzell has been named president and CEO of Mack Defense LLC. The appointment was effective Jan. 1, 2018.

Hartzell joined Mack Defense, an integral part of Mack Trucks, as director of engineering in 2015 and became senior director of product development, purchasing and projects in 2017. He first joined Mack Trucks as a staff engineer in 1988. He was chief engineer for electrical and electronic engineering beginning in 1998 before becoming director of product planning in 2003 and director of product development in 2005. 

Hartzell is headquartered in Allentown, Pennsylvania.

Mack Defense, a wholly-owned subsidiary of Mack Trucks, is responsible for the sale of heavy duty trucks to federal- and ministerial-level customers globally.

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