It's sort of difficult to get detailed specs, but they are NOT the same; totally different companies. Super similar though. I checked weights and they seem to have about the same construction, which makes sense if they're spec'd for military use in Canada and US respectively. Scepter has smaller cans; LCI just the 5g. LCI has a sort of lock on the lid to prevent accidental unscrewing; the scepter didn't. Scepter had rubber gaskets for at least the big opening; LCI didn't. That being said, my LCIs can hold quite a bit of air pressure, so I got a good seal. Others have had to do some sanding down or retrofitting with gaskets to get a better seal.
LCI is mostly in the business of fulfilling contracts to the gov't, hence the property of US thing. They are a non-profit employing blind folks. I don't understand why retailers like REI, Big 5, etc don't carry their Amercian stuff instead of the cheapo plastic junk they usually sell, but maybe they can't cuz of that "property" thing.