Like somebody said previously, its a no-win situation. Given the current political climate in the US, whatever is done will either be a) too much, and therefore silly; b) not enough, and therefore negligent; or c) the wrong thing, and therefore ignorant.
You've got to believe that the guys who want to get us know what security measures we have in place. If not, then what are we worried about in the first place? Look, the airlines have checked for guns for a long time (albeit badly at times). But they have checked, and there has not been a gun hijacking in a very long time. So the bad guys used razor knives. So the airlines ban all sharp things to the point of silliness. So the bad guys tried a shoe bomb. So the airlines ban all lighters (even though matches were used in the attempt), and make us all take off our shoes. So the bad guys (supposedly) were going to try gel explosives. So the airlines make thousands of passengers throw out thousands of $$ worth of shampoo and toothpaste. So the (bad?) guys ask for seat belt extenders without needing them and find out the passengers are still watching. So what's next. Now we'll fingerprint everyone coming in. You can bet that the bad guys, if they are intending mayhem, will send a nobody who has never been on the grid to come over innocently with some perfectly verifiable identity and reason, to commit said mayhem. But, if the airlines (or US customs) did the same old same old that they ever did, another plane may have been taken over with box cutters, some shoe bomb may have exploded, or some verifiably trained and experienced bad guy may have come over to commit some mayhem. And the person in charge would rightly be charged with malfeasence.
So, like I said, its a no win situation.
So what do you do? Complain when it's too much or silly because they won't try the old tricks again, or complain when its not enough and they repeat what worked before?