@colleenyoung Thanks for the article...informative. His last proton therapy treatment was last week....yay! Hopefully, the side effects will start to diminish. As far as the trip, we had a bit of a "glitch." I am scheduled for spine surgery September 22nd and the trip was to take place before the surgery. I did not pass my heart clearance....Surprise! I had no idea I had heart issues. After a series of tests last week, I will be having a cardiac cath this Wednesday and a possible stent. I guess it's a good thing I had to get cleared or I would have never known. The question is my main left artery! Thanks for asking.