Marion resident Dean Armstrong, whose brother Neil was the first man to walk on the moon 50 years ago, will speak Sunday afternoon at Marion Community Center.

Dean Armstrong is a longtime resident of Marion, living at the county lake since 2006 and in Florence for 15 years before moving to Marion.

Armstrong will be interviewed by local history teacher Grant Thieroff and share memories on Neil with the audience.

The program was arranged by Marion City Library in commemoration of the 50-year anniversary of Apollo 11 and Neil Armstrong’s walk on the moon.

At the moment Neil Armstrong set foot on the surface of the moon, he said “That’s one small step for man, one giant leap for mankind.”

Dean Armstrong later said Neil had shown him what he’d intended to say: “That’s one small step for a man, one giant leap for mankind.”

Armstrong declined to be interviewed in advance of his presentation at the library.