The Military Sealift Command fleet replenishment oiler USNS Henry J. Kaiser, foreground, and the dock landing ship USS Rushmore, background, sail alongside the amphibious assault ship USS Peleliu before an underway replenishment in the Pacific Ocean Aug. 22, 2012. Peleliu is conducting a certification exercise, designed to evaluate her performance on vital missions such as humanitarian assistance and disaster relief operations or non-combatant operations.