I worry abut that on all my trips. Always carry spares for my Surefire and
just waiting for an Agent to hassle me about them. Flashlight itself looks like a stick of dynamite on the x-ray but so far not one question.
I have not read the link above but a buddy returned to Columbia from DFW just a day or two ago and he said they allowed him to carry on any lithium type batteries but would not let him have any in a "checked" bag. when flying out of Mexico, they always make us put the spares in the "checked" luggage,gets confusing:confused1::confused1: