Because hospitals are too good at fixing regular stab-wounds?
knife that freezes organs
From the page: This weapon injects a frozen ball of compressed gas approximately the size of a basketball at 800psi nearly instantly.
oh my goodness, that is so not true, the author is an idiot to think that he has accurately described how this knife functions. that said, I've seen it before, and it's a great idea for divers.
lolz in comments
Why are they selling these to pilots?
Fear mongering at its best. Stick to the killer robot and global warming stories... That's a more pure form of fear mongering, fear of the non-existent.
Because the best way to make sure a deadly weapon doesn't fall into the wrong hands is to write an article about it.