buildings in this part of town. Abbottabad was one of the communities hardest hit by the catastrophic earthquake four years earlier, and no one wanted to risk the construction of more than two stories of concrete block.
When he was satisfied that he was not being followed or observed, he pulled out of the parking lot, driving three miles northeast on Kakul Road to the suburb of Bilal Town, near Pakistan’s national military academy. The high, burning sun gave rise to mirage vapors in the distance, but he was content that he was unfollowed and alone. He had made this commute many times before.
His property was roughly triangular, and he entered the grounds through a gate in the twelve-foot-high concrete wall at the western point. He pulled into a narrow alley about twenty yards long, then got out to close the first gate and open the second. This admitted him into a parking apron. Khan drove the Suzuki into one of the four bays of a garage and closed the door.
Khan saw three bicycles with wicker tool panniers in the adjoining bays. He frowned. Always easier when bin Laden was alone. Outsiders did not come often. They usually disguised themselves as workmen and stayed through most of a day, leaving after Asr when the streets of the neighborhood filled with similarly homebound laborers and servants.
Still, the presence of strangers in the house made him wary. He wished he could delay his visit, but that would only raise unwarranted suspicion. He pulled from the passenger-side floor two large yellow plastic bags containing twelve-pack cans of Coke, fresh mangoes and apricots, and a jug of bleach.
With the flash drive in his trouser pocket, Khan walked through another mantrap gate into the main courtyard. He had had the house constructed soon after the earthquake. To his neighbors curious about its high walls, razor wire, and security cameras, Khan explained that the house was also home to his uncle, a gold dealer who needed the extra protection.
The main building comprised three stories over a square footprint about fifty feet long on each side. As with the outside walls, the house was constructed with steel-reinforced cinder block, which had been further strengthened with troweled concrete to a thickness of one foot. There was no telephone or Internet connection.
Khan went in through the ground-floor entrance reserved for men, so there was no risk of encountering an unveiled woman. The interior was barnlike, with very few wall coverings and no unnecessary furniture. Ahead, a narrow staircase rose through a small opening in the ceiling to the second floor.
To his right, he heard voices coming from the parlor, a traditional room for business and reception, always near the doorway in any Arab dwelling of substance. Ever since Khan had agreed to shield and shelter bin Laden, he had disciplined himself to have stone ears.
But these voices were too loud to ignore. Emotional speech in this dwelling was rare. The visiting workmen were usually so softly spoken, they had to lean close to one another to be heard.
“Why have we not made more progress with the water tunnels?” Khan heard one of them snap.
When the man he was addressing remained silent, the sharp-tongued speaker went on.
“You have said we have loyalists on the maintenance crews. How difficult can it be to seed the anthrax?”
“The workers are never alone.” This was another voice, with a distinctly Yemeni accent. “We have already lost a man, rest him peacefully. Handling the anthrax is as dangerous to the warrior as it is to the targets.”
The first voice. “Can we reliably expect a result within six months? That is the greatest question. Money, as we all know, is an issue. Our purse is light.”
“I think not. We began this endeavor in the hope that success with the water tunnel would make the Trade Center victory seem like a stolen bicycle by comparison. But fortune has not favored us.”
A third voice, this one slightly off, the speaker an Arab