Schirra thus became the only astronaut to fly Mercury, Gemini and Apollo missions. Slayton was responsible for making all Gemini and Apollo crew assignments. He was a Project Gemini and an Apollo program astronaut. In 1962 NASA needed a second group of astronauts for the Gemini and Apollo programs. During the Mercury, Gemini, and Apollo programs, astronauts were trained there. This name was used through the Gemini and early Apollo programs. In fact, Grissom was assigned to command the first flights of both Gemini and Apollo. Astronaut Gus Grissom was heavily involved in the development and design of the Gemini spacecraft. Lovell was selected as backup pilot for Gemini 4. Lovell and Aldrin had previously flown together as the crew of Gemini 12. All missions were commanded by Gemini or Mercury veterans. This was followed by other brands like Kannan Devan, Agni, Gemini and Chakra Gold. Lovell was later scheduled to be the backup command pilot of Gemini 10. Teja becomes enraged at being outsmarted by Gemini. Another open cluster in Gemini is NGC 2158.