By 1965, the Gemini suit had given way to a prototype Apollo suit that was much easier to maneuver in. The team continued to rehearse its plans for the upcoming Moon mission in loaner suits from NASA, allowing them to specially design and build equipment that astronauts could use on the Moon. Here, USGS scientist Joe O’Connor dons a cowboy hat and space suit during an Apollo Extension Test sometime between September 20 and October 1, 1965, at a site — a dike within the Hopi Buttes Volcanic Field in the territory of the Navajo Nation — that scientists referred to as Apollo Mesa.