190505-N-AD347-1008 SOUTH CHINA SEA (May 5, 2019) The fleet replenishment oiler USNS Walter S. Diehl (T-AO 193) approaches the Avenger-class mine countermeasures ship USS Pioneer (MCM 9), not pictured, for cargo during a replenishment-at-sea. Pioneer, part of Mine Countermeasures Squadron 7, is operating in the U.S. 7th Fleet area of operations to enhance interoperability with partners and serve as a ready-response platform for contingency operations. (U.S. Navy photo by Lt. j.g. Alexander Fairbanks/Released)