Proponents of the paint hypothesis claim that the glow is actually the fire igniting on the starboard side, as seen by some other witnesses. From two eyewitness statements, Bain asserts the fire began near cell 1 behind the tail fins and spread forward before it was seen by witnesses on the port side. However, photographs of the early stages of the fire show the gas cells of the "Hindenburg's" entire aft section fully aflame, and no glow is seen through the areas where the fabric is still intact. Burning gas spewing upward from the top of the airship was causing low pressure inside, allowing atmospheric pressure to press the skin inwards.