Looking for my father

I am 34 years old and still do not know my father. He fought in the Vietnam War, I beleive he served 2 tours. We lived in Fort Riley, Kansas. That is where I was born. I have vauge memories of life after the war. We moved to New York. But that is it. I know he married a Philopino lady named Mercedes and had a child named Adrian in 1976. I would really love to know my dad. Any help would be eternally appreciated. Thank you for letting me talk-Heather