Back in the old days in high school, we did this experiment in biology lab. A cigarette smoke was passed through a bottle with a live goldfish and then we could see how its gills turn black. It was supposed to show us that smoking is bad, it had no effect on students decisions of course. I don’t think they are allowed to do such experiments these days.
Military payment certificates, or MPC, was a form of currency used to pay United States (US) military personnel in certain foreign countries in the mid and late twentieth century. They were used in one area or another from a few months after the end of World War II until a few months after the end of U.S. participation in the Vietnam War – from 1946 until 1973.
So now we need to wait another year to see what will exit from the assumed time machine portal, and how the one exit that portal going to kill the one kneeling (and what shirt color would it have).