They all are terrible and useless. Before 9/11 I did not know I left my new swiss army knife in my carry on, I went through sweden security, through english security, finally I was picked out as the random hand check by this lone pale older guy. He finds the knife, calls in reinforcements to show the prize the screeners did not catch. After measuring the knife, He Had a hard time folding the knife back in. So he drops the knife and tries to grab it with his open hand. Well the blade sliced his hand to the bone. So the bleeder is sitting down pale and unresponsive as the shock troops come flying down the hall. Needless to say I was placed up against the wall. I forget exactly what I said, but in a one african language it was an insult to the largest stormtrooper, who went at me. Fortunately the others were pulling the unfriendly off of me. After delaying the plane, They let me go and gave the knife to the pilot to return to me in ireland.

Beside them not catching me flying on other planes that day, going through multiple screeners in different countries, they gave me back the knife. That Knife has a locking blade which is not legal in England.