From 27 September to 5 October 1953, Yeager was at Kadena Air Base in Okinawa. General Boyd was, by this time, commander of the Wright Air Development Center and he had requested that Yeager and Maj Tom Collins join him there so they could perform a complete evaluation of the first Russian MiG 15 to come into American hands. Yeager considered this “the most demanding assignment” he had faced up to that point in time. Under an extremely tight schedule, in wretched weather, he had to wring out what he called a “flying booby trap”–an unforgiving craft, susceptible to unexpected pitch-ups, fatal spins, and a host of other problems.