As Lena's plane is about to crash at 300 mph, Kara exits the plane and lifts it over the mountain. She then returns to her seat, all without the pilot noticing the cabin door has been opened twice.
Upon discovering that James has become immune to fire, Brainiac remarks that he is now inflammable. However, the word "inflammable" is a synonym for "flammable" (i.e., easily capable of burning). He most likely meant to use the word "nonflammable" (i.e., not easily capable of burning). This is a strange mistake to be made by someone who constantly boasts of being a "twelfth-level intellect."