It never ceases to amaze me that some otherwise technically proficient aircrew are as gullible as the general public in believing that airport security offers a defence against terrorists. Do any on this site seriously believe that the boys from Hereford could not get weapons of some kind through security and on to an aircraft; and if they can so can the terrorist.
The only thing preventing a terrorist outrage is the fact that no government will back them with the resources to put together a viable operation for fear of the consequences. The Taliban were the last to offer a safe haven and look where that got them.