carrier. you must notify the carrier. that's federal law. >> so, that's interesting. >> yeah. you can transport -- >> are you supposed to be asked if you have anything -- i don't recall -- i think it's mostly because i take carryon luggage but i do travel a lot. when you're checking luggage, are you always asked if you have any firearms? is that something a gate agent has to ask you when you're checking your luggage? >> well, the onus is really on the person carrying the firearm. but often, the ticket agent does ask, do you have any hazardous materials, chemicals, firearms? they often ask. but they're not required to ask. you're required to notify them, because you're the one transporting the firearm. if you put it in the checked baggage, this is how we used to bust gun traffickers all the time. we follow them to an airport, they had a briefcase full of guns, you know, a dozen handguns in the briefcase, flying from one city to another to traffic the guns. we follow them in the airport. we had to let them go in because they hadn't committed the crime