I've been watching the live video of the shooting incident at Ft. Lauderdale airport. It is claimed that the passenger on an Air Canada flight who had a checked firearm (handgun) claimed his luggage at the baggage carousel, took his baggage into the restroom, retrieved his gun, loaded it, and returned to the baggage claim area where he shot some 13-14 people waiting for their luggage, five fatally.
My initial question is this: Canada has very strict regulations of who can possess a hand gun. It's a really serious violation to try to bring one into Canada.
That suggests he did not check the gun in Canada, but possibly in Alaska where the gun regs. are much less strict, more like those in the lower 48. I'd like to know if this was a flight connecting from Alaska via some Canadian airport on to Ft. Lauderdale.
Bottom line: I don't see someone waltzing into a Canadian airport and checking a handgun and ammunition in their luggage. It is possible you could check a gun in AK if the luggage would never be in your possession until you claimed your luggage in FL. Let's see if that proves to be what happened.