Ted Koppel (search) will devote the entire half-hour of "Nightline" (search) Friday to reading names and showing photographs of the more than 500 U.S. servicemen and women killed in action in Iraq (search), ABC announced Wednesday.

Each service member's photo will be shown, along with his or her name, military branch, rank and age as Koppel reads the name aloud. Since the ABC News broadcast is just 30 minutes, it will include only those killed in action in Iraq since March 19, 2003, as certified by the Defense Department.

The network will use photos and information from the Army Times Publishing Company's online "Faces of Valor" database.

"Memorial Day might have been the most logical occasion on which to do this program," Koppel said. "But we felt that the impact would actually be greater on a day when the entire nation is not focused on its war dead."

ABC News will simulcast the program live on its Jumbotron screen in Times Square, and ABC News Radio will air excerpts, the network said.

"Nightline" airs in most markets at 11:35 p.m. EDT.