A friend of mine had his tank confiscated from his e cig by TSA. I forgot to ask where, but I believe it was probably in Fla. on his trip back to PA. He had his Evo in his pocket when he go to the scanning station, put it with the stuff going thru the scanner, and was pulled aside by the TSA folks. He explained what it was but they said the fluid could not be verified. They left him keep the battery, but took the tank. Just an FYI