Suffice to say that all Muslims need to pray that those among them preparing to kill for allah are not so stupid to employ any further WMD against innocents.
I would be compelled to take actions myself at that point.
I doubt at that point it would involve the use of poster-board and a permanent marker.
That being said, how many Islamics have died in tragic accidents of all type since 911? Is the 'religion of peace' becoming the religion of the accident victim?