They aren't allowed in carryon's. I suggested in my initial post to put it in checked luggage over carry on.. less chance of them finding it and less chance of them proving without a doubt you placed it there..

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Like a leaf in a stream. This is how we must live life. Always accepting the present, wherever it may take us. Experiencing all, yet clinging to none. For all things must pass, and all things must change. This is the order of life. Resistance to this is a resistance to life itself.