You saw him holding it up to the sun above the graves of Martha and Thomas Wayne... Telling the plan  to his parents a smile on his face as the sunlight hit the piece of metal.

"I live between the moon and the stars... And in the greatest time of need I will fly down and save Gotham.."

You heard every word but he was aware of your presence.  He pocketed the object turning to look at you.." Mom and dad... I didn't just come here to introduce my true self... I wanted you to hear from a person who grew close after you left. Someone you should've met... More than just a good friend to me.. A hero to me.."