Counter sophisticated terrorist attacks

Shortly before 9/11 there was intelligence showing a great number of Al-Qaeda operatives had enrolled in United States colleges to learn how to fly commercial airline flights. At the time the foreseeable threat was that of Weapons of Mass Destruction like a Chemical or a Biological Weapon. No one had imagined a commercial airline would be used as a deadly weapon by Al-Qaeda operatives. FBI was on the spot for not acting on memo detailing the pattern of unique enrolment in commercial airline training Arizona.

Whereas the intelligence was there, we cannot blame FBI for not figuring out what type of attack was forthcoming. France unlike any other country in Europe has been a constant reference in unique terrorism attacks that happen despite there being an unparalleled security presence in Paris. Terrorist to their best are evolving faster the technology of our age. They attack when least expected but more appalling is that the current actors of terrorist acts are people outside of the radar of the intelligence agencies.