@HBI The commenter, previously billing himself on this queue as "Brian The Scientist", rarely bothers impeding himself with actual facts, altho he will *claim the knowledge of the gawds on most all subject of science. Brian finally "trimmed" his original self-chosen online handle when sufficient numbers of commenters proved him *wrong on the bulk of his "scientific" claims. So, consider this an "unofficial", and definitely "unsolicited" bit of background trivia. ;-D ;-D I would go with trusting your OWN experience, as I see that you usually do.

And, yes. Troops going to Vietnam were subjected to 21 Overseas shots, administered by *air gun as the troops were slow marched by the medics. Frequently "off target", the air guns could either administer the shot, OR rip a long divot in your skin due to the movement of the march.