The maid would later tell the FBI that it looked as if the men slept on top of their sheets and placed light silk clothes over their pillows. In the room, the maid discovered copious amounts of body hair and water left on the floor. The maid also noted that all the room’s lotion bottles had been emptied.

The brothers had shaved off all of their body hair, symbolically purging themselves of their sins. This was just one of many instructions provided to them, so that they could prepare for their martyrdom.

"Do not leave your apartment unless you have performed ablution before leaving," the list read in Arabic, "Because the angels will ask for your forgiveness as long as you are in a state of ablution, and will pray for you."

By 6:45 a.m., the clean-shaven al-Ghamdi brothers arrived at Boston Logan, Terminal C. A taxi driver had driven the two to the airport from the Days Inn. The brothers gave him a 15-cent tip.

That morning, 10 hijackers maneuvered through Boston Logan airport. All were cleared through security. The al-Ghamdi brothers boarded the plane with mace and knives hidden away.

They took their seats.