Obama is said to value Jones' advice and appreciates the signal it sends to put someone with more than 40 years of active military experience in such a senior position. Jones earned a reputation as someone who vocally expressed concern that the Pentagon had become too politicized during the reign of Defense Secretary Donald Rumsfeld, another quality Obama is said to admire. Jones also brings with him expertise in two very sensitive international problems that Obama will be faced with immediately upon taking office, having served as chairman of the Congressional Independent Commission on the Security Forces of Iraq, and as special envoy for Middle East Security.
http://blogs.abcnews.com/politicalpunch/2008/11/retired-four-st.html