From an AP obit by Seth Borenstein headlined “Astronaut James McDivitt, Apollo 9 commander, dies at 93”:

James A. McDivitt, who commanded the Apollo 9 mission testing the first complete set of equipment to go to the moon, has died.

McDivitt was also the commander of 1965’s Gemini 4 mission, where his best friend and colleague Ed White made the first U.S. spacewalk. His photographs of White during the spacewalk became iconic images.

He passed on a chance to land on the moon and instead became the space agency’s program manager for five Apollo missions after the Apollo 11 moon landing.