He served in both world wars, bombing Germany, as a B-17 Flying Fortress co-pilot with the 486th Bombardment Group. After the Second World War, he operated a charter business in South America. He was married to Crystine Francis Malstrom, a stage actress who appeared in Abie's Irish Rose. He was the author of several books, including Squadron of Death, Crash Pilot, I Am Still Alive, and Visibility Unlimited.
Grace sustained a serious neck injury when he fell out of the cockpit during the filming of Wings. But he made a full recovery and was one of the few stunt pilots of his day who died of natural causes.[3]
