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. He was 93.

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, AP reported.

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.

McDivitt died Thursday in Tucson, Arizona, NASA said Monday.

In his first flight in 1965, McDivitt reported seeing “something out there” about the shape of a soda can flying outside his Gemini spaceship. People called it a UFO and McDivitt would later joke that he became “a world-renowned UFO expert.” Years later he figured it was just a reflection of bolts in the window.

McDivitt left NASA and the Air Force in 1972 for a series of private industry jobs, including president of the railcar division at Pullman Inc. and a senior position at aerospace firm Rockwell International. He retired from the military with the rank of brigadier general.