Pair of F-18 Fighter Jets from the Royal Australian Air Force, receivesfuel from a KC-135 Tanker's boom, from the 185th Air Refueling Wing (ARW) Sioux City, Iowa, Iowa Air National Guard, over the East coast of Australia, in Williamtown, New South Wales, Australia, on February 23, 2011. The 185th ARW is participating in a joint flight exercise, "Sentry Down Under", refueling F-16C and F-18 Fighter Jets in Australia. (USAF Photo/ Tech. Sgt. Oscar M. Sanchez-Alvarez)