In this case it was a blown fitting on our hot water heater... which resulted in massive flooding of the kitchen compartment. The offending fitting:
We quick like a bunny shut off the water to El Casa Móvil De Pennington, whereupon we went without water for approximately 12 hours, or until such time as The Pro From Dover... in the form of Andy The RV Doctor (Bless His Heart!)... could arrive on scene and rectify the situation.
One would ask why we just didn't take matters into our own (incapable) hands and one would just as quickly answer that we know our limitations. This pic should explain things:
We just aren't all that into pulling the stove and assorted panels to get access to the aforementioned fitting, nor do we have said fitting in our bench stock. Checkbook maintenance is highly underrated among the handy do-it-yourself set. Shorter: we know our limitations. And we have funds to defray the cost of doing what we cannot (or will not) do for ourselves.
All is well: we have hot water again and our kitchen is leak free. Life is good...