Mihdhar bought a fake ID on July 10 from All Services Plus in Passaic County , New Jersey , which was in the business of selling counterfeit documents , including another ID to Flight 11 hijacker Abdulaziz al-Omari . On August 1 , Mihdhar and fellow Flight 77 hijacker Hani Hanjour drove to Virginia in order to obtain driver 's licenses . Once they arrived , they scouted out a 7-Eleven convenience store and a dollar store in Falls Church , and found two Salvadoran immigrants who , for $ 50 each , were willing to vouch for Mihdhar and Hanjour as being Virginian residents . With notarized residency forms , Mihdhar and Hanjour were able to obtain driver 's licenses at a Virginian motor vehicle office . Flight 77 hijackers Salem al-Hazmi and Majed Moqed , and United Airlines Flight 93 hijacker Ziad Jarrah used the same addresses obtained from the Salvadorans to obtain Virginian driver 's licenses
United Airlines Flight 93
United Airlines Flight 93
Khalid al-Mihdhar