I thank everyone for their responses.  My Dad just had his 3rd treatment (of this round) last Friday.  His mood has changed, so much that they're getting away for a few days, then back for treatment on Friday.  They have increased his pain meds.  I think he's on 2 patches and hydrocodene 4 times a day.  I have to give props for my step-mother.  She has taken very good care of him.  He's said that he wants to come back to NC once he's done with these treatments. 
marisakay, is your father-in-law's pain in his neck/mouth region, or can he feel it in his bones?  I hope they can get the pain under control.  Maybe that will give your husband some time with his Father.  If he/you haven't read Final Journeys, I would highly recommend it.  I don't think you can ever be prepared, but I think it will help me with how I handle myself around my Father, as well, how I handle this with my children (10,8, and 3.)  Take Care...