Osama Bin Laden tells trainees in his Afghanistan training camps that there will be an attack in the near future. US intelligence learns of this comment and it is mentioned to top US leaders in an early July 2001 briefing (see July 10, 2001). More details, such as how the US learned this or how many people bin Laden told this to, have not been made public. [Tenet, 2007, pp. 152] But in the summer of 2001, bin Laden is overheard making a number of similar comments hinting at upcoming attacks (see Summer 2001).