The world's largest aircraft carrier, USS Gerald R. Ford (CVN 78), conducts a replenishment at sea (RAS) with the John Lewis-class underway replenishment oiler, USNS Harvey Milk (T-AO 206),

How John Lewis-Class Fleet Replenishment Oilers Transform US At-Sea Resupply

The John Lewis-class fleet replenishment oilers don’t just support the US Navy but multiply its reach. Here’s how underway refueling and logistics turn weeks into months at sea.

The Defense Post