Please Help Me Find Him

[AZUL]

Hello to everyone!
I am writing from Santa Cruz, Bolivia.
I am looking for Todd Patrick Johnson, from PA.
He joined the US army or marines or navy (I really don't know, but I know he was in a submarine, so you guys must know...hehe we don't have an ocean coast in Bolivia so I have no idea which force you have to join to be in a submarine...sorry for my ignorance)
It is very important for us to find him because Todd was an exchange student in Bolivia in 1986 to 87, and we are having our 20 aniversary cl*** reunion next December.
If you know him, please tell him to contact me, my name is Paula. He will know my last name and just by googleing my full name he will find my webpage and be able to write to me.
I'm sure that you know how it feels to get in contact with people you don't see for such a long time. So PLEASE help us find Todd.
Thank you.