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Donald Trump tapped Emil Michael (at right) in December 2024 to become undersecretary of defense for research and engineering.WIN MCNAMEE—Getty Images
Artemis 2 works toward April launchThe revised campaign comes as engineers work through immediate issues on Artemis II, the first crewed flight of the program. After a successful "wet dress rehearsal" — a full countdown test that loads the rocket with super‑cold fuel — teams discovered that helium was not flowing correctly to the engines in the rocket's upper stage.