So sorry to hear of your family's problems with acid reflux, and your loss of your father. Try to keep positive thoughts even though it is going to be hard. Wait for the results of the tests and know that there are many treatments available for people. Your other brother with Barretts should be on medication too. Perhaps this scare will help your brother to cut down on drinking and smoking. Smoking is very difficult to stop, but it is possible. My husband quit after learning he needed 5 by-passes and a new aortic valve. He was never able to quit before that and when he got the diagnosis, he put cigs down, got the patch and that was it. He is now a non-smoker.
Best wishes to you and your family. Please let us know what the diagnosis is when you find out. God bless you.