In 2006 and 2007 I've written extensive timelines of the alleged hijackers. Since the homepage of Team8+ isn't online anymore I'v posted them on a blog. I hope that it can be useful to some of you.

http://johndoeii.blog.com/category/timelines-of-alleged-hijackers/

Here a quick overview of the findings: 

Proof of an alleged hijacker having a double:

Mohamed Atta

Marwan Al Shehhi

Very strong indications of an alleged hijacker having a double:

Jarrah

Hani Hanjour

Strong indications of an alleged hijacker having a double:

Khalid Almihdhar

Salem Alhazmi

Nawaf Alhazmi

Considerable indications of an alleged hijacker having a double:

Ahmed Alghamdi

Hamza Alghamdi

Waleed Al Shehri

Strong indications of an identity of an alleged hijacker created AFTER 911:

Abdulaziz Al Omari

Very strong indications that somebody with the same name entered the country before the official entrance date:

Saeed Alghamdi

Ahmed Alnami

Ziad Jarrah

Majed Moqed

Salem Alhazmi

Hani Hanjour

Khalid Almihdhar

Nawaf Alhazmi

Ahmed Alghamdi

Hamza Alghamdi

Marwan Al Shehhi

Satam Al Suqami

Fayez Banihammad

Mohamed Atta (according to Able Danger)

Marwan Al Shehhi (according to Able Danger)

Comment: The case of alleged hijackers clearly being in the US before their official entrance date is by far more than only a proof of an inaccurate investigation. It is far more than that. The entrance date are documented by INS papers. Therefore we can conclude that either these documents have been faked by the INS then we need to wonder what could be so important to cover up? Or the INS documents are authentic than we can conclude that one person with the name of an alleged hijacker did indeed enter the country while another person with the same name of an alleged hijacker was already in the US. So, it would be another proof of having two different people using the very same identity.

Very interesting is the case of Able Danger: As Atta, Al Shehhi, Almihdhar and Nawaf Alhazmi have been identified as a terrorist cell in January 2000 although Atta and Al Shehhi still were in Germany and Almhdhar and Nawaf Alhazmi only arrived mid-January in the US (but not in New York but in California) we can conclude that the persons being identified as possible terrorists can’t be the same that at the same time still lived in Germany or just arrived at the other coast of the US.

People having the same name as alleged hijackers having attended military schools in the US:

Saeed Alghamdi

Ahmed Alnami

Ahmed Alghamdi

Abdulaziz Al Omari

Mohamed Atta

Comment: Since the Pentagon said that the people attending the military schools are “probably” not the same as the alleged hijackers the media completely dropped this question although no clear answer has ever been given.

Alleged hijackers being at one point illegally in the US:

Khalid Almihdhar (since August 27, 2001)

Satam Al Suqami (since May 21, 2001)

Mohamed Atta

Nawaf Alhazmi

Hani Hanjour

Ziad Jarrah

Marwan Al-Shehhi