I found this interesting and thought I'd share. Here you will find a video presentation, slides and ancillary material for the lecture. Some of the language is NSFW. The approach taken in the lecture is using firearms as a way to protect your other items when flying, which I have to admit, makes a lot of sense.
"If some monster tries to rape or murder a woman I care about, I dont want him to see the flickering light of a candle. I want him to see a muzzle flash, from the front." -- Massad Ayoob