ALIDADE REPORT U.S. Navy Petty Officer 3rd Class Cindy R. Skinner uses a telescopic alidade to make reports on surface contacts aboard the amphibious assault ship USS Essex in the Pacific Ocean, Nov. 5, 2008. The USS Essex is the lead ship of the only forward-deployed U.S. Expeditionary Strike Group. Skinner is an operations specialist. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 525121-V-YCJ68-692.jpg Photo Gallery