U.S. Navy Chief Petty Officer Doris Koch is pinned during a chief's pinning ceremony in the hangar bay aboard the Nimitz-class aircraft carrier USS John C. Stennis under way in the Pacific Ocean, Sept. 14, 2012. Koch is a personnel specialist. U.S. Navy Chief Petty Officer Doris Koch is pinned during a chief's pinning ceremony in the hangar bay aboard the Nimitz-class aircraft carrier USS John C. Stennis under way in the Pacific Ocean, Sept. 14, 2012. Koch is a personnel specialist. SHARE: Download: Full Size (3.22 MB) Tags: Photo Essays Credit: VIRIN: 988484-Y-YAN87-356.jpg Photo Gallery