Thanks to everyone who has offered comments, prayers, and encouragement. Over the last few days my dad seems to be gaining strength each day. His mood and breathing are improving too. He is about halfway through the radiation regime, and tomorrow morning we will get a report from the doctor on how the treatments are working so far. It certainly looks to my untrained eye that something is working. Actually, I feel fairly strongly that my dad will get somewhat better in the next few weeks, as long as the chemo doesn't weaken him too much. His next chemo is on Monday, but he did not have one this week. And I'm pretty sure that's why he's feeling more energetic now.