Dave you can see on my post me sitting in the door of my UH-1B Huey gun ship. We used to fly cover for the C130's that did the spraying. It never failed they would have a malfunction with the spray system and we would wind getting caught in the spray. My green ship would be red and i would be covered also. It was one heck of a job gitting that stuff off the ship. Talking 4-5 hours of washing. Sorry about your dad, have lost several crew members to that stuff.