[quote name='David85']If terrorists want to "nuke" us they will hit a power plant with a plane, that is so easily done.[/QUOTE]
Triggering a nuclear fission reaction can not be done by flying a plane into a nuclear power plant.
It is a complicated process that involves splitting an atom by adding neutron to it and destabilizing it.
Also, since power plants don't use weapons grade uranium or weapons grade plutonium, unless the terrorists stole it and did and processed it into weapons grade material (not easy, not cheap), there is no way it would blow up anyway.
The worst a terrorist could do is get into the processing plant (impossible), steal the radioacive material (alsoimpossible), strap it to a bomb, and blow it up to spread it around. And even a "dirty bomb" wouldn't do much damage using Plutonium 238 because it would neeeed to be vaporized and inhaled or land in someones food to kill someone.
But to think flying a plane into a nuclear power plant would cause a meltdown is ridiculus.
And to the guy worrying about foreign countries using nuclear power, sercurity guards in European and Russian nuclear power plants are more like soldiers than guards, and they are armed with machinegunes, rifles, and the patrols have submachineguns and pistols.
If you try and get into a French nuclear plant you would be extremely lucky if your family could identify your body.