William Langewiesche, an author, journalist and aviator, said that in Cairo he encountered three groups of people. He said that the ordinary Cairenes believed that there was an American conspiracy to attack EgyptAir 990 and that the Americans were covering up the fact. He added that a small group of Cairenes, mostly consisting of "intelligentsia", "knew perfectly well that Batouti, the co-pilot, had pushed that airplane into the water, and that the Egyptian government was stonewalling and was engaged in what they saw as a typical exercise in Egyptian governing." Langewiesche said that "people involved directly in the investigation" had "presented a uniform party line, a uniform face with very few cracks. They stonewalled me, and that in itself was very interesting." Langewiesche argued that "in the stonewalling they were revealing themselves" and that if they truly believed Batouti was innocent, they would have invited Langewiesche to see proof of this theory.