I really think the travel issues with dive gear, can lights, and rebreathers are going by the wayside. We've traveled to multiple caribbean destinations and Mexico without ever a question. The only issue I ever had was I had a multitool in my carryon that had an oring pick. They confiscated it because it could be used as a weapon. We have also travelled to france twice with technical gear. First time we flew into Toulouse and out of Paris with no issue. The second time we flew into England then to France without an issue. I'm sure issues occur, but compared to 10 years ago they're much better.