Speaking about water, I often wonder about the water we drank in Vietnam,68-69, specially when we were out in the jungle. You didn’t always find a river, so you hoped to find a stagnant pool of water, wipe the scum off the surface, fill your canteen up, and the drop a water purification tablet/iodine tablet in it. When you were thirsty I guess it didn’t make any difference how it tasted. It didn’t kill me as I’m still going strong at 76.