Best of luck to your father and to yourself and your family.
I'm going through this with my own father right now, although his was caught early and didn't have the same scary overtones that your does. At least until a few weeks ago when they found something on an x-ray in one of his lungs. Now we're waiting on that.
The more time passes, the more evident it's becoming that cancer has become a reality that we're all going to have to face sooner or later, with ourselves or with loved ones (or both). It's basically reached epidemic proportions (I have my own theories why - atmospheric nuclear testing, un-regulated food preservatives and additives, etc), and it's only going to grow.
