Secretary of Defense Donald H. Rumsfeld (left) and Under Secretary of Defense for Acquisition, Technology and Logistics Edward C. "Pete" Aldridge Jr., listen to remarks at a swearing in ceremony in the Pentagon on May 11, 2001. Aldridge will be the principal advisor to the secretary for all matters relating to the acquisition of weapons and material, including research and development, testing and evaluation, production, logistics, military construction and procurement.