HOSPITAL VISIT U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, greets Charlie Lock, a former Marine who was injured in a motorcycle accident and is now a patient at the Spinal Cord Injury Unit, at the Veterans Affairs hospital in Palo Alto, Calif., Sept. 23, 2008. Mullen visited the hospital to visit with staff and learn about programs helping servicemembers returning from Iraq and Afghanistan. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 371957-M-ONU81-150.jpg Photo Gallery