Permafrost
It seems you missed "Magenta Line", but I guess that's more of a PPruNe thing. It's prolly best the average DMailer doesn't know about that.
IcePack
It seems odd to me as well. I've had canisters of CS I kept in my vehicle due to one rogue "rescue" dog I had who could be a concern in a runaway situation. (It was intended for the dog if I needed to keep him from a person or other animal he might bother on a walkabout.) I've given them to my wife for self defense. All the canisters I've had have all had a locking system to prevent accidental discharge.
I've taken a dose of CS before in "training" and found it quite unpleasant.