 In 2010, forty years after the Apollo 13 flight, the U of T scientific team was publicly honoured with medals presented to surviving members by the Canadian Air and Space Museum for their role in the incident.One of the astronauts, Fred Haise spoke at the presentation thanking them personally.Etkin's treatment of six degree of freedom (6-DoF) theory in "Dynamics of Atmospheric Flight" was unusual in being sufficiently general that it touched upon hypersonic flight and was usable in simulating Atmospheric reentry.