Apollo 15 to Apollo 12, and since Apollo 11's backup crew had been designated for Apollo 13 (which did not land on the Moon), they were the first Apollo crew for a successful lunar landing mission to have backed up another such mission. Having had the opportunity to familiarize themselves with the Apollo spacecraft, they could devote more of their training time as prime crew for Apollo 15 to geology and sampling techniques. The astronauts at NASA who were scientists, such as geologist Harrison Schmitt, pushed though the early Apollo missions for a greater place for science as part of the mission,
George H. Hanks against him and his mission, which included an egging of the house where he was staying. In April 1864, Hanks returned to New Orleans where he was Superintendent of Negro Labor. One task he pursued was extending freedom to the children of emancipated slaves who were still being held by their parents' former owners. Hanks worried that Southern planters felt no loyalty to the United States and had no interest to the freedom of blacks, saying that after the war, "to be left without national guarantees for the maintenance of their civil rights as freemen would be worse than slavery."