Does anyone remember those Paratrooper knives? The Handle and sheath are one and the same and it opens up like a car jack.

I was just looking through one of my drawers where I have kept some older knives and found one of those paratrooper knives... Wow what was I thinking when I bought it lol. Have had it for over 33 years now and come to think of it haven't seen one sold anywhere for almost that long.