Mitchell: Reverse the polarity.
Mitchell as the Captain gave orders to "reverse the polarity". "Reverse the polarity (of the neutron flow)" is a phrase typically associated with the Third Doctor from Doctor Who, Jon Pertwee, as his way of dealing with technobabble that he was required to speak in that show. Although he only said the full phrase once during his initial tenure. Prior to the return of Doctor Who on television in 2005, Ben Browder was among those asked for his views on that show's return.