Penny, Amy, and Bernadette discuss how other superheroes can possibly pick up Thor's hammer. Bernadette suggests that, through the transitive property, the Hulk could pick it up by picking up Thor while he's holding his hammer. Amy disagrees with her, and Penny tries to apply the logic to picking up a guy at the bar.
Henry Ford explores the history of barnstorming and how the women part it became historical figures that represented an era of old entertainment. This proves that women too have taken part in redefining the roles of men and women in society.
Cameron realizes that Ferris's plan to take off miles from the speedometer by pushing the pedal while in reverse isn't working. This clip can illustrate that distance cannot be a negative value.
The captain tells the squadron that he is expanding it to four members, which concerns all of the lieutenants. Lt. Purcell states that four is an unlucky number because it's not prime. He then defines a prime number.