At sea with the USS John F. Kennedy Battle Group (Jun. 19, 2002) -- The guided-missile destroyer USS Hopper (DDG 70) (left) and the aircraft carrier USS John F. Kennedy (CV 67) (right) conduct a simultaneous replenishment at sea (RAS) with the auxiliary fleet oiler USNS Walter S. Diehl (TAO 193) (center). The Kennedy Battle Group is conducting combat missions in support of Operation Enduring Freedom. U.S. Navy photo by Photographerâs Mate 1st Class Jim Hampshire. (RELEASED)