original_query: What was the role of Zellars in supporting the occupation of the roadstead at Kerama Retto?
query: What was the role of the USS Zellars in supporting the occupation of the roadstead at Kerama Retto during World War II?
answer: The USS Zellars worked with battleships and cruisers, supporting the occupation of the roadstead at Kerama Retto and pre-invasion bombardment of Okinawa.