Osama bin Laden held Hazmi and Mihdhar in high respect, with their experience fighting during the 1990s in Bosnia and elsewhere. Al-Qaeda later referred to Hazmi as Mihdhar's "Second-in-command".[6] When bin Laden committed to the "planes operation" plot in spring 1999, he personally selected Hazmi and Mihdhar to be involved in the plot as pilot hijackers. In addition to Hazmi and Mihdhar, two Yemenis were selected for a southeast Asia component of the plot, which was later scrapped for being too difficult to coordinate with the operations in the United States.