Dave, this terrible news only bring sadness, very sadness in my heart.
Dave, my thoughts and prayers are with You and Your family!
But nevertheless , You must keep hope , that your father-in law many more years will be with you and your family.
My people have sentence: "Shared joy(with your friends) is double joy, but shared sadness(with your friends) is half a sadness"!
Dave ,You and Your family must to believe in future!