Quartermaster 2nd Class Nickolas Gibson uses a sextant to measure the distance between amphibious transport dock ship USS Green Bay (LPD 20) and Military Sealift Command fleet replenishment oiler USNS Yukon (T-AO 202) during an underway replenishment. The crew of Green Bay is currently in the basic phase of training in preparation for forward deployment to Sasebo, Japan, early next year. (U.S. Navy photo by Mass Communication Specialist 1st Class Elizabeth Merriam/Released)