When I was younger, I went on a school sponsored trip to Washington DC. There at a hotdog stand outside the Smithsonian Air & Space Museum, I met a Vietnamese reporter, who fought served in the Vietnamese army during the Vietnam war. He had the whitest hair I have ever seen. He explained that he survived a B-52 attack during the war, and as a result his hair became shock-white after the attack.
Well, I was 16 at the time, and it seemed to make sense back then.