<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Mook:
Given (1) and (2) above, there should be no need for random, unnecessary searches</font>
The technology just isn't there yet. Doesn't matter how well the operator is trained nor how much experience they have, they will still miss some weapons. Knives and concealed explosives are particularly difficult to detect on Xrays.