Petty Officer 3rd Class Valerie Collier performs maintenance on a milling machine. U.S. Navy Petty Officer 3rd Class Valerie Collier performs maintenance on a milling machine in the machinery shop aboard the amphibious assault ship USS Essex (LHD-2) in the East China Sea on June 17, 2009. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 673047-N-FEK58-452.jpg Photo Gallery