James Randolph, Mechanical Engineering, Boeing, Portrait, Friday, June 28, 2019 at Michoud Assembly Facility, New Orleans, LA. Photo Credit: (NASA/Aubrey Gemignani)

James Randolph, Mechanical Engineering, Boeing, Portrait, Friday, June 28, 2019 at Michoud Assembly Facility, New Orleans, LA. Photo Credit: (NASA/Aubrey Gemignani)

James Randolph, Mechanical Engineering, Boeing, Portrait, Friday, June 28, 2019 at Michoud Assembly Facility, New Orleans, LA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine, right, signs an agreement with Dr. Marc Serres, chief executive officer, Luxembourg Space Agency (LSA), left, while the Honorable James Randolph Evans, Ambassador to the Grant Duchy of Luxembourg, back right, and Etienne Schneider, Deputy Prime Minister, back left, observe at the 70th International Astronautical Congress, Tuesday, Oct. 22, 2019 in Washington. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine, right, and Dr. Marc Serres, chief executive officer, Luxembourg Space Agency (LSA), left, shake hands after signing an agreement while the Honorable James Randolph Evans, Ambassador to the Grant Duchy of Luxembourg, back right, and Etienne Schneider, Deputy Prime Minister, back left, observed at the 70th International Astronautical Congress, Tuesday, Oct. 22, 2019 in Washington. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. - At NASA’s Kennedy Space Center, the 2004 class of astronaut candidates gather for a photo in front of Space Shuttle Discovery in the Vehicle Assembly Building. Above them are the External Tank and twin Solid Rocket Boosters. The ascans are, in the back row, left to right, Richard Arnold II, Jose Hernandez, Robert Satcher, Thomas Marshburn, Satoshi Furukawa, Dorothy Metcalf-Lindenburger, Robert Kimbrough and Randolph Bresnik; in the front row, left to right, are James Dutton, Shannon Walker, Joseph Acaba, Naoko Yamazaki, Akahiko Hoshide and Christopher Cassidy. The class of 14 candidates includes three candidates from the Japan Aerospace Exploration Agency as well as three educator astronauts, who were school teachers chosen from thousands of applicants.

KENNEDY SPACE CENTER, FLA. - At NASA’s Kennedy Space Center, the 2004 class of astronaut candidates gather for a class photo in front of the nose of Atlantis in the Orbiter Processing Facility bay 1. In the back row, from left to right, are Joseph Acaba, Randolph Bresnik, James Dutton, Shannon Walker, Richard Arnold II, Christopher Cassidy, Thomas Marshburn and Robert Satcher. In the front row, left to right, are Akahiko Hoshide, Satoshi Furukawa, Naoko Yamazaki, Dorothy Metcalf-Lindenburger, Jose Hernandez and Robert Kimbrough. Atlantis is being processed for Return to Flight mission STS-121 in July. The astronaut candidates are at KSC to participate in firefighting training and familiarization tours. The class of 14 candidates includes three candidates from the Japan Aerospace Exploration Agency as well as three educator astronauts, who were school teachers chosen from thousands of applicants.