In 2004 he became the senior logistician for Secretary Donald Rumsfeld , a post now titled Assistant Secretary of Defense for Logistics and Materiel Readiness .
In February 2003 , Berkson joined the Office of the Secretary of Defense at the Pentagon .
In 2004 Berkson became the senior logistician for Secretary Donald Rumsfeld , a post now titled Assistant Secretary of Defense for Logistics and Materiel Readiness .
In February 2003 , Berkson joined the Office of the Secretary of Defense at the Pentagon .