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 IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 448367-E-IWV87-468.jpg Photo Gallery