Vipper, I am so sorry for your loss. My heart and prayers are with you and your family. May Mark be in Heaven with our Lord today, and may he comfort you all today, and every day. I lost my only brother back in 1995 at the age of 51...massive heart attack. The blessing was that my parents were already gone, and didn’t have to go through the heartache. He survived Vietnam, but died far too young. I remain close to his family.