According to Jon Fav, Tony Stark (iron man)’s father (Hward Stark) will actually be in the upcomming Catain America movie.
Here is what he had to say to MTV:
“Yeah, because he was around then. [‘Captain America’] is World War II. It wouldn’t be that same actor, probably, because he would be much younger.[Howard Stark] was starting out during that time, and [he] was involved with the war effort, much like Howard Hughes,”
That’s cool, I’m guessng he is the one that makes him the shield.