He imagines the plane exploding as it touches down, ignited by one of its glints, in a ball of red flame shadowed in black like you see on TV all the time, and he is shocked to find within himself, imagining this, not much emotion, just a cold thrill at being a witness, a kind of bleak wonder at the fury of chemicals, and relief that he hadn't been on the plane himself but was instead safe on this side of the glass, with his faint pronged sense of doom.