Who trained as a test pilot in the United States, Roberto Vittori or Philippe Perrin?
Roberto Vittori: Roberto Vittori (born 15 October 1964 in Viterbo) is an Italian air force officer and an ESA astronaut. Roberto Vittori:  He then trained as a test pilot in the United States. Philippe Perrin: Philippe Perrin (Colonel, French Air Force) (born January 6, 1963) is a French test pilot and former CNES and European Space Agency astronaut.
Roberto Vittori