Passage: Mohamed Atta, the ringleader of the attacks, and a fellow hijacker, Abdulaziz al-Omari, arrived at Portland International Jetport at 05:41 Eastern Daylight Time on September 11, 2001. They boarded Colgan Air Flight 5930, which was scheduled to depart at 06:00 from Portland, Maine, and fly to Boston. Both hijackers had first class tickets with a connecting flight to Los Angeles; Atta checked in two bags, Omari none. When they checked in, the Computer-Assisted Passenger Prescreening System (CAPPS) selected Atta for extra luggage scrutiny, but he boarded without incident. The flight from Portland departed on time and arrived in Boston at 06:45. Three other hijackers, Waleed al-Shehri, Wail al-Shehri, and Satam al-Suqami, arrived at Logan Airport at 06:45, having left their rental car in the airport parking facility. At 06:52, Marwan al-Shehhi, the hijacker pilot of United Airlines Flight 175, made a call from a pay phone in Logan Airport to Atta's cell phone.Since they were not given boarding passes for Flight 11 in Portland, Atta and Omari checked in and went through security in Boston. In the rushed check-in after the flight from Portland, airline officials did not load Atta's bags on Flight 11. Suqami, Wail al-Shehri, and Waleed al-Shehri also checked in for the flight in Boston. Wail al-Shehri and Suqami each checked one bag; Waleed al-Shehri did not check any bags. CAPPS selected all three for a detailed luggage check. As the CAPPS' screening was only for luggage, the three hijackers did not undergo any extra scrutiny at the passenger security checkpoint.

Question: Who didn't check any of the bags?
Waleed al-Shehri