These programs do no harm I suppose; don't see that they do any good though.
Well, yes and no. True, it won't provide 100% security against the really bad guys. But then again who or what will? Properly administered I'd like to believe that such schemes do have merit. Additionally I also firmly believe that airports would vastly reduce their security headaches if they provided
good public viewing/photography facilities rather than have members of the public scattered about all around the field. Unfortunately, I have to be cynical and say that IMHO some of today's so-called security experts are no more experts than my 2 year old grandson!