The newest member of Sikorsky's H-60 family, the U.S. Navy's CH-60S, is on schedule to start operational test and evaluation with test squadron VX-1 later this year, following the arrival of the third aircraft at NAS Patuxent River on June 20. The CH-60S is a ship-qualified multi-purpose helicopter. It has the UH-60 Black Hawk's cabin and cargo-handling features, including external stores pylons, and the folding tail rotor pylon and powered blade-folding features of the SH-60 Sea Hawk. It also has an advanced glass cockpit with 8-by-10-inch flat-panel displays. The U.S. Navy plans to buy 200 CH-60S helicopters. They will replace CH-46Ds for ship-to-ship and ship-to-shore transport and will also be used for carrier search and rescue ("plane guard") duties, combat search and rescue, and special operations support. Delivery of ten CH-60S helicopters this year marks the resumption of H-60 deliveries to the Navy, which ceased with the last Sea Hawk in 1996.