NASA astronaut candidates Marcos Berríos, left, Deniz Burnham, Jack Hathaway, Christopher Williams, and Jessica Wittner, are seen during a meeting with NASA Administrator Bill Nelson, NASA Deputy Administrator Pam Melroy, and Bob Cabana, NASA associate administrator, Wednesday, Oct. 18, 2023, at the Mary W. Jackson NASA Headquarters building in Washington. Upon completion of two years of training they could be assigned to missions that involve performing research aboard the International Space Station, launching from American soil on spacecraft built by commercial companies, as well as deep space missions to destinations including the Moon on NASA’s Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Joel Kowsky)