Onboard the USN Navy (USN) Aircraft Carrier, USS KITTY HAWK (CV 63), SEAMAN (SN) Gavin Takata inserts a bolt into a DD rig block. The DD rig is a system of pulleys used to help guide fuel hoses from refueling ships during Replenishment At Sea (RAS). The KITTY HAWK is currently in port at Yokosuka, Japan