Iwo Jima veteran and National Museum of the Marine Corps docent Frank Matthews shows a group of high school students the place on a map of the island of Iwo Jima where his unit landed and then fought its way north for two hours under fire. - Iwo Jima veteran and National Museum of the Marine Corps docent Frank Matthews shows a group of high school students the place on a map of the island of Iwo Jima where his unit landed and then fought its way north for two hours under fire.