Jim, on a couple of trips guys with the machines in carry ons were not allowed on the plane with them. So to avoid having to check carry on luggage we pack detectors in suitcases. And that is a crap-shoot! TSA is the problem and it makes me angry just to think about it. I have found nearly every time TSA has NO RESPECT for my personal items. I understand that they have a tough job, but that does not give then a Right to hit my luggage like a thief in the night! They rummage through everything, open and dump my spare parts containers, pull on machine wires, scratch machines and so on! Once they took my diamond tester apart! Once half of my travel scoop was missing! The TSA could care less if they ruin my vacation because they handle my gear roughly. I do not even use TSA locks anymore because often the TSA will not replace them! This is out of the Seattle, Washington airport and I would love to have an Off-Duty TSA agent personally explain why they do this? I have even gone so far as to place easy to read notes in my bags requesting TSA please handle my gear with respect. But that seems to just bug them and they make more of a mess! I have been on enough trips to know that TSA is the problem with sensitive/fragile detectors and not baggage handlers! CC.