Short answers, pulled from the story.
McDivitt commanded two missions: Gemini 4 in June 1965 and Apollo 9 in March 1969. Gemini 4 included the first American spacewalk, performed by Ed White. Apollo 9 was the first crewed test of the Apollo Lunar Module in Earth orbit, completing 151 orbits over 10 days.
Over Hawaii on the mission's second day, McDivitt observed an object he described as resembling a beer can or pop can with a pencil-like protrusion. He took photographs, though the images were poorly exposed. Mercury Seven astronaut Gordon Cooper later wrote that this was the only officially reported UFO account across the Mercury, Gemini, and Apollo programs.
McDivitt resigned after not being consulted about the selection of Gene Cernan to command Apollo 17. He confronted flight director Chris Kraft and threatened to resign unless Cernan was removed. When Kraft confirmed the selection stood, McDivitt resigned but remained through the end of Apollo 16 before leaving in June 1972.
McDivitt's crew named the lunar module "Spider" and the command module "Gumdrop." Apollo 9 launched on the 3rd of March 1969 and completed the first crewed test of the Apollo Lunar Module, including the first transfer of astronauts between two docked spacecraft in flight.
McDivitt was selected as part of NASA's Astronaut Group 2 in September 1962. He had trained as an experimental test pilot at Edwards Air Force Base after graduating first in his aeronautical engineering class at the University of Michigan in 1959. By the time of his selection, he had logged over 2,500 flight hours.
James McDivitt died on the 13th of October 2022 in Tucson, Arizona, at the age of 93.