I have taken mine and I have been doing this for years and never a problem. I never have hidden mine either. My husband has walked thru many times with his in his shirt pocket , only because he'd forgotten he had it there. NEVER A PROBLEM . Doing this for years.
I don't know 100% but I broke mine down and separated it through the x-ray. Passed just fine
I believe so, just have to put it in checked bag or take it out and run though security on it's own
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