The first USO opened on this day in 1941, and for armed forces overseas it was home away from home. If you've got a second home far away that's not occupied during winter or you leave home for long periods, there is a risk when temperatures drop. Even drained water pipes hold some water and can freeze and burst unless you fortify like a seasoned pro. In extreme cold-weather, RV campers and boaters use special nontoxic antifreeze containing propylene glycol. It is safe for all drinking-water systems, it's inexpensive (only dollars per gallon). It's found in RV centers, sports stores, auto supply houses, even large drug stores. Used full strength, it prevents freezing down to 50-below. If you are going to be away, protect pipes with RV antifreeze, but never-ever use regular automotive antifreeze instead. Unlike its non-toxic RV cousin, it's poisonous. And that's the On The House tip for today.