As a US citizen, to people from other countries who are just trying to visit the States and have a nice time traveling, and accidentally set off the metal detector at the airport...I am sorry. So very very sorry.
This is a general example of service-suckage, not specific. I am scared stiff of airport security in the US. They scowl, they're in a hurry to get you through, but not in so much of a hurry as to not have the time to pull you over roughly and molest you with their metal detectors. What should normally be a routine thing is made humiliating by these bitter guards. I've heard stories about people having to remove articles of clothing other than shoes or jackets, in public of course, and of guards being less than tactful and delicate when searching women. And there is absolutely nothing you can do.
When I was coming over to Germany, I had to naturally go through security at the airport in the US first. I remember being petrified that I wasn't moving fast enough, or that something in my bag would set the detector off, or worse, I would set the detector off. The guy directing me on how to pull out my laptop was rather short with me, even though it was a lazy Sunday afternoon, and there were only a few people in the lines.
I realize of course that the US is all on guard for terrorist attacks, but that's no reason to frighten the regular civilians! We already have to take off our shoes -_- I have metal implants in my head, and I swear one day they'll start scanning people's heads, and mine will set their detectors off, and there will be this huge comotion over what the heck I could be hiding in my nose or mouth, except there's nothing in there....Do you see how worked up I get at the prospect of drawing the attention of the holy US security???
I just don't see why I have to be so nervous about being checked for bombs or guns or pointy objects and such. I didn't even see that it was sucky service until I had the pleasure of dealing with these nice European airport staff :-)