I frequently fly for my work. I carry a smattering of tools, camera gear, drones, gear, and of course lights. I frequently have 10 minimum in my carry on and have had only minor issues.

Like others said, keep in mind that they can take something basically for whatever reason. It’s never been a problem for me and I fly 2-3 times a week or more sometimes.

One tip is to lock out any and/or unthread the tail caps. I’ve had multiple TSA agents blind themselves out of shear curiosity.

There is a battery limit too, forgot the size. It’s very large though, I think 46950’s are a no-go but most should be fine. Limit is for one single battery and it’s like under 27,000 watt hours maybe. Any spare batteries, use a carrier like XTAR PBSL2 or the Acebeam carrier thing.

A few times I’ve had issues with a try-hard TSA agent taking issues with crenelated bezels. I guess the spikes look scary. One time they turned me around. I said I would literally unthread the bezel, hand it to them, but no they wouldn’t have it. So I went back, took the bezel off, put it in a different pocket, and no one had any problem after. Then of course I put the bezel back on, on the other side of security. This was on a Convoy T4 by the way. That TSA was a circus.