Oldřich Pelčák
Oldřich Pelčák was a Czech cosmonaut and engineer. He graduated from Gagarin Air Force Academy. In 1976, Pelčák was selected as backup for fellow Czech Vladimír Remek for the Soyuz 28 mission. Remek was the first man in space who was neither American nor Soviet. Pelčák, who did not fly in space, died on 7 October 2023, at the age of 79.