Yeah, my grandfather was VC and he still does to this day.

Not to my knowledge, but I believe he was wounded by a punji stake in Vietnam.

They dipped bamboo spears in human feces and stuck them in the ground along trails the US used. These are the infamous "punji stakes" or "punji spikes." We defeated the threat of punji stakes by inventing a combat boot with a piece of sheet steel in the sole, having millions of pairs made quickly, and issuing two pair to every US troop in Vietnam.

Punji stakes.

The King Cobra has been around for years, they use charmers by their punji(which is a flutelike instrument)