Several 9/11 hijackers purchase multi-use tools and small knives that “may actually have been used in the attacks.” according to the 9/11 Commission. [9/11 Commission, 7/24/2004, pp. 248-249] 
On July 8, Flight 11 hijacker Mohamed Atta buys two Victorinox Swiss Army knives at Zurich Airport, Switzerland, while on his way to Spain (see July 8-19, 2001). He possibly attempts to buy box cutters in Florida on August 27. On August 30, he buys a Leatherman multi-tool in Boynton Beach, Florida. [9/11 Commission, 7/24/2004, pp. 530; 9/11 Commission, 8/26/2004, pp. 4, 85] On August 13, Flight 175 hijackers Marwan Alshehhi, Fayez Ahmed Banihammad, and Hamza Alghamdi buy knives and multi-tools. Alshehhi buys a Cliphanger Viper and an Imperial Tradesman Dual Edge, both short-bladed knives. Banihammad buys a Stanley two-piece snap knife set, and Alghamdi buys a Leatherman Wave multi-tool. All purchases are made in the same city, though the 9/11 Commission does not say where this is. [9/11 Commission, 8/26/2004, pp. 17] On August 27, Flight 77 hijacker Nawaf Alhazmi buys Leatherman multi-tool knives. [9/11 Commission, 8/26/2004, pp. 27] Although it is unknown whether any of these knives and tools are used on 9/11, the 9/11 Commission will point out, “While FAA rules did not expressly prohibit knives with blades under four inches long, the airlines’ checkpoint operations guide (which was developed in cooperation with the FAA), explicitly permitted them.” [9/11 Commission, 7/24/2004, pp. 84] Regarding Flight 93, personal financial records do not reflect weapons being purchased by any of the hijackers. However, the FBI will reportedly recover “14 knives or portions of knives, including a box cutter,” at the crash site. [9/11 Commission, 7/24/2004, pp. 457; 9/11 Commission, 8/26/2004, pp. 35]
July 13, 2001: CIA Reexamines Al-Qaeda Malaysia Summit but ‘Major League Killer’ Is Not Put on Watch List
Tom Wilshire, a CIA manager assigned to the FBI who expressed interest two months earlier in surveillance photos from the al-Qaeda Malaysia summit (see January 5-8, 2000), now finds a cable he had been looking for regarding that summit. The cable, from January 2001, discusses al-Qaeda leader Khallad bin Attash’s presence at the summit. Wilshire explains later that bin Attash’s presence there had been troubling him. He writes an e-mail to the CIA’s Counterterrorist Center (CTC), stating, “[Khallad] is a major league killer, who orchestrated the Cole attack (see October 12, 2000) and possibly the Africa bombings (see 10:35-10:39 a.m., August 7, 1998).” Yet Khallad is still not put on a terrorist watch list. Wilshire asks that the FBI be passed this information, but the FBI will not actually be given the information until August 30, a week after it learns future 9/11 hijacker Khalid Almihdhar is in the US. [US Congress, 7/24/2003, pp. 157 
; US Department of Justice, 11/2004, pp. 298 ] Although the CIA managers that receive this e-mail are not named, Richard Blee, in charge of the CIA’s bin Laden unit and Wilshire’s former boss, appears to be one of the recipients: On the same day Wilshire sends this e-mail, Blee writes his own e-mail entitled “Identification of Khallad,” which is sent to another CIA officer. [Central Intelligence Agency, 7/13/2001; 9/11 Commission, 7/24/2004, pp. 537] An FBI analyst assigned to the CTC is given the task of reviewing all other CIA cables about the Malaysian summit. It takes this analyst until August 21—over five weeks later—to put together that Khalid Almihdhar had a US visa and that Nawaf Alhazmi had traveled to the US. Yet other CIA agents are already well aware of these facts but are not sharing the information (see August 22, 2001). Working with immigration officials, this analyst then learns that Almihdhar entered and left the US in 2000, and entered again on July 4, 2001, and that Alhazmi appears to still be in the US. [US Congress, 7/24/2003, pp. 157 ; US Department of Justice, 11/2004, pp. 298 ]
July 20, 2001: 9/11 Hijacker Hanjour and Possibly Alhazmi Fly Near Washington
9/11 hijacker Hani Hanjour rents an aircraft from Caldwell Flight Academy in New Jersey and flies to Montgomery Airpark in Maryland. The route he takes means that he flies near to Washington. He is accompanied by another man the 9/11 Commission will suggest is hijacker Nawaf Alhazmi, whose credit card is used to pay for the aircraft rental, as well as fuel in Maryland. [9/11 Commission, 7/24/2004, pp. 242; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006, pp. 67 ]
August 2001: Six 9/11 Hijackers Live Near Entrance to NSA
At least six 9/11 hijackers, including all of those who boarded Flight 77, live in Laurel, Maryland, from about this time. They reportedly include Hani Hanjour, Majed Moqed, Khalid Almihdhar, Nawaf Alhazmi, and Salem Alhazmi. Laurel, Maryland, is home to a Muslim imam named Moataz Al-Hallak who teaches at a local Islamic school and has been linked to bin Laden. He has testified three times before a grand jury investigating bin Laden. NSA expert James Bamford later states, “The terrorist cell that eventually took over the airliner that crashed into the Pentagon ended up living, working, planning and developing all their activities in Laurel, Maryland, which happens to be the home of the NSA. So they were actually living alongside NSA employees as they were plotting all these things.” [Washington Post, 9/19/2001; Radio 4 ‘Today’, 6/21/2002]
August 2001: NSA Intercepts Another Call between Yemen Hub and 9/11 Hijackers Alhazmi and Almihdhar in US
The NSA has been intercepting calls between at least two 9/11 hijackers, Nawaf Alhazmi and Khalid Almihdhar, in the US and an al-Qaeda communications hub in Sana’a, Yemen, run by al-Qaeda operative Ahmed al-Hada over an approximately 18-month period before 9/11 (see Early 2000-Summer 2001). According to MSNBC, the final intercepted call comes “only weeks” before 9/11. [MSNBC, 7/21/2004] Around the same time there is great alarm in the US intelligence community over a communications intercept in Yemen indicating there was going to be a major al-Qaeda attack against US interests (see June 30-July 1, 2001). Further, the investigation of the USS Cole bombing has reignited interest in Almihdhar and Alhazmi on the part of the US intelligence community since at least June 2001 (see June 11, 2001 and July 13, 2001). The two of them are placed on an international no-fly list in late August (see August 23, 2001).
August 13-14, 2001: 9/11 Hijackers Meet in Las Vegas for Summit
The lead hijackers meet in Las Vegas for a summit a few weeks before 9/11. Investigators will believe that this is the “most crucial planning in the United States,” but will not understand why the hijackers choose Vegas, since they are all living on the East Coast at this time (see March 2001-September 1, 2001 and August 6-September 9, 2001). One senior official will speculate, “Perhaps they figured it would be easy to blend in.” [New York Times, 11/4/2001] At least three of the plot leaders are in Las Vegas at this time. Hani Hanjour and Nawaf Alhazmi fly from Dulles Airport to Los Angeles on an American Airlines Boeing 757, the same sort of plane they hijack on 9/11, and then continue to Las Vegas. Mohamed Atta also flies to Las Vegas from Washington National Airport. This is his second trip to Vegas, which was also previously visited by some of the other hijackers (see May 24-August 14, 2001). A few weeks earlier, Atta had traveled to Spain, possibly with some of the other hijackers, to finalize the plans for the attack with their associate Ramzi bin al-Shibh (see July 8-19, 2001). [US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006, pp. 1, 17, 21 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006, pp. 57-8 ] Alhazmi will later be recalled by a hotel employee, who will say she ran into him at the Days Inn. According to her later account, he is “cold and abrupt,” in Vegas on “important business,” and will soon be traveling to Los Angeles. He asks for a list of Days Inns in Los Angeles, but does not want a reservation to be made. He also claims to be from Florida, although he is only thought to have spent a week there (see June 19-25, 2001). [Las Vegas Review-Journal, 10/26/2001] A close associate of the hijackers, Ramzi bin al-Shibh, will later say in a 2002 interview that Ziad Jarrah, Marwan Alshehhi, and Khalid Almihdhar are also present in Vegas at this time. [Fouda and Fielding, 2003, pp. 137] Newsweek calls Vegas an “odd location” and comments: “They stayed in cheap hotels on a dreary stretch of the Strip frequented by dope dealers and $10 street hookers. Perhaps they wished to be fortified for their mission by visiting a shrine to American decadence. Or maybe they just wanted a city that was easy to reach by air from their various cells in Florida, New Jersey and San Diego.” [Newsweek, 10/15/2001]
August 16, 2001: Moussaoui’s Belongings Possess Information Sufficient to Roll Up 9/11 Plot
After Zacarias Moussaoui is arrested, the FBI wishes to search his possessions (see August 16, 2001 and August 23-27, 2001). According to a presentation made by FBI agent Aaron Zebley at Moussaoui’s trial, the belongings are sufficient to potentially connect Moussaoui to eleven of the 9/11 hijackers: Mohamed Atta, Marwan Alshehhi, Ziad Jarrah, Hani Hanjour, Khalid Almihdhar, Nawaf Alhazmi, Fayez Banihammad, Ahmed Alhaznawi, Hamza Alghamdi, Satam Al Suqami, and Waleed Alshehri. The connections would be made, for example, through Ramzi bin al-Shibh, who spoke with Moussaoui on the telephone and wired him money (see July 29, 2001-August 3, 2001), and who was linked to three of the hijacker pilots from their time in Germany together (see November 1, 1998-February 2001). Bin al-Shibh also received money from Mustafa Ahmed al-Hawsawi, who was connected to hijacker Fayez Ahmed Banihammad (see June 25, 2001). [US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006] Moussaoui’s notebook contained two recognizable control numbers for the Western Union wire transfers from bin al-Shibh and, according to McClatchy newspapers, a check on these numbers “would probably have uncovered other wires in the preceding days” to bin al-Shibh from al-Hawsawi. [McClatchy Newspapers, 9/11/2007] The discovery of the eleven hijackers could potentially have led to the discovery of some or all of the remaining eight plot members, as they were brothers (Wail and Waleed Alshehri, Nawaf and Salem Alhazmi), opened bank accounts together (see May 1-July 18, 2001 and June 27-August 23, 2001), lived together (see March 2001-September 1, 2001), obtained identity documents together (see April 12-September 7, 2001 and August 1-2, 2001), arrived in the US together (see April 23-June 29, 2001), and booked tickets on the same four flights on 9/11 (see August 25-September 5, 2001).
August 16-September 10, 2001: 9/11 Hijackers Make Series of Deposits to Bank Accounts
Several deposits are made to the 9/11 hijackers’ accounts. Details are available for some of the deposits for eleven of the nineteen hijackers: Mohamed Atta, Marwan Alshehhi, Ziad Jarrah, Hani Hanjour, Nawaf Alhazmi, Khalid Almihdhar, Ahmed Alhazmawi, Fayez Ahmed Banihammad, Hamza Alghamdi, Waleed Alshehri, and Satam Al Suqami. Over $40,000 is deposited in their accounts, much in cash. The largest amounts deposited in one day occur on August 24, when $8,000 is split equally between Hamza Alghamdi’s account and a joint account of Atta and Alshehhi, and September 5, when a total of $9,650 is split between Banihammad’s and Hamza Alghamdi’s accounts, and the joint Atta/Alshehhi account. The smallest deposit is $120, paid into Khalid Almihdhar’s First Union National Bank account on September 9. [US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ] Although it is impossible to trace the exact origins of the deposits, possible sources include withdrawals from other hijackers’ bank accounts, cash and traveler’s checks brought in by the hijackers in the spring/early summer (see January 15, 2000-August 2001), car sales, and money distributed by Atta, who reportedly received around $100,000 in early August (see Early August 2001, Summer 2001 and before, and Mid-July-Mid-August 2001).
August 21-22, 2001: FBI Agents Finally Realize 9/11 Hijacker Almihdhar Is in US
An FBI agent detailed to the CIA’s bin Laden unit locates CIA cables saying that future 9/11 hijacker Nawaf Alhazmi entered the US in early 2000. The agent, Margaret Gillespie, then checks with the US Customs Service and discovers that another future 9/11 hijacker, Khalid Almihdhar, entered the US on July 4, 2001, and there is no record he has left the country. As there is “an imperative to find anyone affiliated with al-Qaeda if they [are] believed to be in the US,” Gillespie immediately contacts Dina Corsi, an FBI agent in its bin Laden unit. Gillespie, who has been examining the USS Cole bombing and al-Qaeda’s Malaysia summit for some time, will later say that when she learns of their arrival in the US, “it all clicks for me.” The Justice Department’s office of inspector general will find that Gillespie’s “actions on receipt of the information clearly indicate that she understood the significance of this information when she received it. She took immediate steps to open an intelligence investigation.” Gillespie and Corsi meet with Tom Wilshire, a CIA officer involved in the investigation (see August 22, 2001), and Almihdhar and Alhazmi are soon watchlisted (see August 23, 2001). [US Department of Justice, 11/2004, pp. 300-301, 313 ; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006 ]
Before August 22, 2001: FBI Headquarters Agent Learns Al-Qaeda Leader Attended Malaysia Summit with 9/11 Hijackers, Investigation Fails to Discover How
FBI headquarters agent Dina Corsi learns that al-Qaeda leader Khallad bin Attash attended a summit in Malaysia that was also attended by 9/11 hijackers Khalid Almihdhar and Nawaf Alhazmi (see January 5-8, 2000); an e-mail sent by Corsi on this date contains the first reference in FBI documents to bin Attash’s presence at the Malaysia summit. Although it is her job to support the investigation into the attack on the USS Cole (see October 12, 2000), which bin Attash commanded, and she is aware that bin Attash is important to the Cole investigation, even saying that she is focused on his identity and whereabouts, she fails to communicate this information to the agents investigating the bombing, who do not receive it before 9/11 (see August 30, 2001). After 9/11, she will say she cannot recall how she learned this information and an investigation by the Justice Department’s Office of Inspector General will fail to find any documents that cast light on the matter. Although she does not do anything with this information before another FBI agent tells her Khalid Almihdhar is in the US (see August 21-22, 2001), she will later say that the information bin Attash was at the Malaysia summit was important, as it connected Almihdhar and Alhazmi to the Cole bombing. She will also say that CIA officers Tom Wilshire and Clark Shannon, who she discussed al-Qaeda’s Malaysia summit with and who knew that bin Attash was in Malaysia with Alhazmi and Almihdhar (see Late May, 2001, Mid-May 2001 and June 11, 2001), did not give her this information. Although Corsi and others know that bin Attash is an important al-Qaeda leader, he is not watchlisted at this point, although one of his aliases is watchlisted in August (see August 23, 2001). [US Department of Justice, 11/2004, pp. 280, 284, 286, 293, 296, 302 ]
