MULLEN REMARKS Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, addresses more than 600 health care professionals at a conference on warrior resilience in Crystal City, Va., Feb. 7, 2011. Mullen was the keynote speaker at the third annual event, which focused on force fitness. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 156120-K-RUX31-597.jpg Photo Gallery