As the Branch of Astrogeology gained momentum in 1963, its staff moved the headquarters from Menlo Park, California, to Flagstaff, Arizona. The town had an established observatory and was near what many scientists considered Moon-like geological features, such as areas shaped by cratering and volcanism. This allowed the geologists working on Apollo — the Manned Lunar Exploration team — to use the nearby craters and rocky landscapes to test methods and equipment in the years leading up to the spaceflights. The first space suit field test took place in June 1964, using an early Gemini suit borrowed from NASA. Here, support staff prepare to send an unidentified suited test subject (thought to be Shoemaker, Phillippi, or Harbour) onto the Moon-like terrain at the Bonito Lava Flow in Sunset Crater National Monument, not too far from Meteor Crater.