[BCM43]

What we are trying to stop has shifted from someone hijacking the plane to someone trying to blow it up. However, this is not a new threat at all, and there are always more ways of getting a bomb on the plane as well as more targets.

[tibbon]

Perhaps, but why do we still focus then so much on 'hijacking' items, like knitting needles that would do little good in making bombs? We haven't reverted to pre 9/11 search coverage of hijack items. Actually, we haven't backed down at all on anything.

It seems that once something is identified a threat, it will always now be seen as a threat.