HORIZON SCAN U.S. Petty Officer 3rd Class James McCaughan scans the horizon for surface contacts during a general quarters drill aboard the aircraft carrier USS Carl Vinson in the U.S. 5th Fleet area of responsibility, Jan. 2, 2015. The Carl Vinson Carrier Strike Group is supporting strike operations in Iraq and Syria as directed and theater security cooperation efforts. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 546954-Q-JDX18-423.jpg Photo Gallery