Hi, I purchased this item some days ago for a friend who lives outside the U.S., and he is very excited about getting it soon. Her mother is travelling from Houston to Peru and plans to carry the item with her on a plane as checked luggage. My question is: do you think there may be a problem to check this item with her luggage? I mean, the cylinders are empty but, could TSA complain about it? Is there any way I can prove that cylinders are empty? What about the torch? I'd really appreciate your help to clarify this. Again, my friend is very excited about having the item soon and I am very satisfied with your service.