Secretary Gates presents the Purple Heart to Marine Gunnery Sgt. David Rohde. Secretary of Defense Robert M. Gates presents the Purple Heart to Marine Gunnery Sgt. David Rohde at Balboa Naval Hospital in San Diego, Calif., on Aug. 12, 2010. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 448367-E-IWV87-468.jpg Photo Gallery