corporal harold keller's daughter. okay, thank you so much for being here so tell me a little bit how you learned it was your dad and what i would called the most iconic photograph of world war ii. >> thank you, i started receiving phone calls from a couple of the researchers, grant and dustin. they started out, we know you're dad was on iwo jima and did you know what he did their? and i went no, not really, he was on the mountain. didn't know anything much beyond that and they said, well, we like to come to your house and kind of fill you and on what your dad did. which they did and got to meet both of the men and the skype with a man from ireland, stephen foley, and it was quite an afternoon. >> martha: it's amazing, and