I used to play golf with a gentleman from work who's name was also Jerry. He was a chain smoker. He retired a couple years before me after his wife died of cancer. I saw him once in awhile on the golf course golfing with an oxygen tank on his back..... and a cigarette in his mouth. I always expected his oxygen tank would turn into a rocket pack at any time carrying him off to be with his wife. It was scary. No one golfed close to him.