My family is learning that. Race, my prayers are with you, your mom and dad, and entire family.
Watching my mother in law wither away with ALS (Lou Gehrig's Disease), I thought I had seen the worse. Watching my dad... Purple Heart recipient, WWII B17 pilot, Air Traffic Controller, daddy.. come under this disease is breaking my heart. I find a good cry every now and then really helps.. it causes me to remember so many moments he and I shared and makes me to count my blessings for this wonderful man. There's a country song named "She Misses Him" I believe, that really brings on the tears.
Cry a bit... hug him and your mom, share memories and go forward and be the person he expects you to be. I hope God blesses my Husband and I with the many years your parents have had. They raised a dang fine son from what I can tell. Like a previous poster said.. please share your dad with us.