 According to Nasiri, he bragged about how important his father was, and offered Nasiri his first hint of Osama bin Laden's role in running the camp—telling him "the other Osama" paid for all the food consumed there.Nasiri described the older son as much quieter, but he did tell about an incident, when he had been present in a public square, during the siege of Khowst, in 1991.A mortar shell landed in the square, but didn't go off.