 Walsh, Photographer's Mate in the Eastern Group of U.S. Navy Operation Highjump, which obtained aerial photographs of Thurston Island and adjacent coastal areas, 1946–47.Mills Cliff is an isolated rock cliff in the north-central part of the peninsula.It was named by US-ACAN after Aviation Machinist's Mate William H. Mills, an aircrewman in the Eastern Group of Operation Highjump.