I went on a 10-day Alaska cruise two years ago. I carried my Leatherman on my belt and a Surefire E2D clipped in my pocket. Every time I went through "security", I simply put both objects on the belt to get x-rayed. The only comment was by the security chief on about day seven. She commented that she really liked my flashlight, and that it was too bad that the security personnel could not carry them. Apparently, only "engineering" staff could carry lights, which were 2-AA MagLites in the nylon belt holsters. During a power failure, security was to find their way to the "emergency lanterns" that were stowed in some of the maintenance and storage areas. We both shook our heads at that.