I all the years (36+) of air travel, with the highest amount during the 1990’s where I was traveling as often as twice amount for magazines, I never gave a second thought high altitude pressure changes might have on my strobes in the belly of a passenger jet. And I have traveled with a few, Subsea, Oceanic’s, Ikelite’s, Sea&Sea’s, MCD’s, etc. and never have had appear to a affected buy the journey. As for batteries, especially my Seas & Sea’s, my only trouble there was not have airport security on occasion not understanding what they were, to more recently convincing them that they are NiMh and not Lithium.
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