You are all correct. There are numerous ways to get flammable liquids through the checkpoint. However, unless draconian measures are taken, that will never change. You can ridicule all you want, but you do not want "real" security either and you know it. If it ever came to that, then there would be so much wailing and gnashing of teeth. You cannot have it both ways people....

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Don't take life too seriously, afterall, you won't get out alive.