 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.