Other psychosocial studies involving astronauts and cosmonauts have been conducted. Various Timex Datalink models were used both by cosmonauts and astronauts. This flight resulted in the historic meeting in space between American astronauts and Soviet cosmonauts. The ISS has been visited by astronauts, cosmonauts and space tourists from 19 different nations. This list includes both cosmonauts and astronauts. No Soviet or Russian cosmonauts have died during spaceflight since 1971. Two Soyuz missions visited the station, each manned by two cosmonauts. The spacecraft was capable of carrying two cosmonauts. Adaptation of the Vostok spacecraft for three cosmonauts. These preparations included fitting of space suits on the cosmonauts and briefings for the spaceflight. They trained at the Yuri Gagarin Cosmonauts Training Center in Russia. The museum also houses photographs related to the cosmodrome's history, including images of all cosmonauts. In that office, he is the administrator of the Yuri Gagarin Cosmonauts Training Center. A film that was later declassified showed support crews attempting CPR on the cosmonauts. The Soviet space program was successful in broadening the pool of cosmonauts.