Has anyone got a notice to TSA that they are particularly proud of?
I have never attempted to travel abroad with any rebreather components, save for a CCR / OC computer that saw some brief scrutiny, in its suspicious Pelican case..
I did have a nice little heart-to-heart with TSA agents, flying out of SFO, to Seattle, some years ago, on an unrelated matter.
They apparently took issue with a number of syringes that I had had, fastened to a pH meter by rubber bands; and a few 5 ml vials of KCl in my field kit, along with a water-stained, mimeographed explanation as to its intended purpose. It had never posed an issue before.
They chatted with me for about twenty minutes, off to the side, while those lowland gorillas -- for those of you who recall the American Tourister ads of yesteryear -- rummaged through my gear. One fellow, with about
the most impenetrable accent that I have ever heard, had thought that I had been mouthing off to him; and then seemed genuinely hurt, when I told him, that I could not understand a word of what he had said.
I did, however, enjoy the Hollis advice on traveling with rebreather components, especially
"Tape over any reference to lithium ion battery packs" and "cover any oxygen labels on your tank with duct tape. Stick a plastic flower in your tank, then when they tell you tanks are prohibited, tell them it is a big steel flower vase."
Expect a high colonic . . .