Hi, my name is Terry. My mother is a daughter of an American soldier who served in Vietnam. Growing up the only information my family and I knew of my grandpa was that he was American, his name was possibly Bill, and I have a picture of him. I don't know what branch of the military he served. My mom was born in 1971, so it had to be sometime before then. With the lost of contact and lost of information, I was wondering if anyone could give any recommendation to how I can somehow find a person based on an old picture? Thanks!