According to the Transportation Security Administration
Air travellers in the United States will soon be allowed to carry small
scissors and tools on planes, but will face more random security
searches that focus more on detecting explosives at airports as part of
an effort to thwart potential terrorists.

The new focus on random searches will include more
additional screenings of passengers and their bags at security
checkpoints. While in the past passengers have been selected
for extra
or “secondary” screening when they check in for their flight, that will
be expanded to checkpoints as well. The secondary checks will
be based
on behaviour patterns and a random pattern selected by the
screeners.

TSA screeners will also use a different pat-down
procedure, to improve their ability to detect nonmetal weapons and
explosive devices that may be carried on the body. Pat-down
searches
will now include the arms and legs. But oh, none of this is
supposed to
cause any major delays.