Sentry Training Navy Seaman Raquel Tonge, left, receives training from Petty Officer 2nd Class Diana Fischer during a training course on armed sentry and security reaction aboard the USS Cole in the Gulf of Oman, Jan. 30, 2017. Tonge is a gas turbine systems mechanic fireman and Fischer is a gunner's mate. The ship is supporting maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of operations. Navy Petty Officer 3rd Class Brianna K. Green SHARE: Download: Full Size (0.91 MB) Credit: Petty Officer 3rd Class Brianna K. Green VIRIN: 170130-N-HB733-155C.JPG Photo Gallery