TUCSON ADDRESS Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, addresses civic and business leaders in Tucson, Ariz., Oct. 1, 2010. Mullen stopped in the southern Arizona city continuing his Conversatons with the Country tour. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 075110-W-NFA59-982.jpg Photo Gallery