Replenishment Patterns The Military Sealift Command fleet replenishment oiler USNS Walter S. Diehl conducts a replenishment with the USS Mustin in the South China Sea, March 23, 2018. The guided-missile destroyer is patrolling in the U.S. 7th Fleet area of operation supporting security and stability in the Indo-Pacific region. Navy photo by Petty Officer 2nd Class William McCann SHARE: Download: Full Size (6.19 MB) Credit: Petty Officer 2nd Class William McCann VIRIN: 180323-N-HE318-0308C.JPG Photo Gallery