Joint Chiefs Chairman Mullen Bids Farewell After 40 Years...

Aired: 9/30/2011 | 0:04:55 | Clip
Joint Chiefs of Staff Chairman Adm. Mike Mullen is retiring after four years overseeing the U.S. military and 40 years of military service. Kwame Holman reports on Mullen's legacy and the farewell to one of the most influential military leaders in modern U.S. history.