I think you will find that 'events on Sept 11 2001' were (in part) a
consequence of carelessness at Boston Logan when the
perpetrators past through gate control.
Perhaps, but as far as I am aware (I haven't read the report) the airport staff were not responsible for bringing weapons airside, nor were any of the perps' airport staff.
I stand to be corrected here though.
Maybe this should be moved to jetblast.