a person engaged in or trained for spaceflight. In 1959, seven American armed forces officers were chosen to undergo special training to be the first Americans in space. At the time of this lecture, these officers were still in training for the first flight while a series of tests, including sending apes and other animals into space, were taking place to ensure that man could safely return from travel into space. —3rd South African published appr gls (14.4.92)