A CH-46 Sea Knight hovers over the flight deck of USS Kitty Hawk during a vertical replenishment (VERTREP) evolution. The CH-46D Sea Knight helicopter is used by the Navy for shipboard delivery of cargo and personnel. The Sea Knight was first procured in 1964 to meet the medium-lift requirements of the Marine Corps in all combat and peacetime environments. The Navy Sea Knight fleet is scheduled to be replaced by September 2004 with the MH-60S Knighthawk. Kitty Hawk is the Navy?s only permanently forward-deployed aircraft carrier and operates out of Yokosuka, Japan. U.S. Navy photo by Photographer?s Mate 3rd Class Todd Frantom.