Soldier Quotes and aphorisms about al-qaeda Stanley A. McChrystal Jack Keane Jack Keane ,, Afghanistan is where much of the al Qaeda journey began. It is the main site where Osama bin Laden,... Jack Keane Michael T. Flynn Michael T. Flynn Michael Mullen Michael Mullen David Petraeus ,, We're here so that Afghanistan does not once again become a sanctuary for transnational extremists ... David Petraeus