Certainly, but does the current terrorist threat consist of "trained, determined inividuals"? There's no question that a Special Forces operative can get lots of stuff through airport security, but that's not the threat it's supposed to be preventing. One can argue that the purpose of security isn't to prevent any threat from getting through (which is impossible), but merely to increase the amount of resources (e.g., training) necessary to get the threat through and the hope is that other efforts (e.g., what's going on in Pakistan, various intelligence efforts, and tracking money) will make it harder for terrorists to be able to bring those amount of resources to bear on the target.