By the end of June, Atta, Jarrah, and al-Shehhi left for the United States. Bin al-Shibh and Essabar wanted to join Atta, al-Shehhi, and Jarrah, but they were denied U.S. visas several times. Bin al-Shibh's visa was denied since he was a citizen of Yemen. He made several more attempts at receiving a U.S. visa. One such attempt was a $2,200 deposit he had sent to the Florida Flight Training Center, on a down payment for a similar training course taken by Ziad Jarrah. He used that application as a basis for a new attempt to get a student visa, as opposed to the visitor visa he had sought previously. On another occasion, he arranged for several thousand dollars to be deposited in his Yemen bank account, to demonstrate financial wherewithal. After his final attempt failed, he was advised by a consular official that they could not help him, and to stop trying. It was then that Bin al-Shibh decided to support the cell by sending money to it. Mohammed was making repeated trips to Indonesia and the Philippines in Southeast Asia at the time. Jarrah nearly abandoned his role in the plot and probably would have been replaced by Zacarias Moussaoui had he done so.