Author James Dalessandro helps filmmakers re-create the destruction of San Francisco's City Hall during the earthquake of 1906.

Archaeologist Doug Scott helps filmmakers re-create the Battle of the Little Bighorn to provide insight into what happened at Custer's Last Stand.

Expert Dr. John Provan helps a team of documentary filmmakers re-create the Hindenburg airship disaster.

World War II historian Martin Morgan leads a film production team on a mission to tell the story of what happened when the United States dropped the first atomic bomb on Hiroshima, Japan, Aug. 6, 1945.

Bill Chemerka, founder of the Alamo Historical Society, helps re-create what happened in 1836 at the landmark in Texas as its defenders made a last stand against Mexican troops.

Donald Goldstein, co-author of 'At Dawn We Slept,' leads a site survey of Pearl Harbor to revisit the Japanese attack and the lucky shot that sank the USS Arizona, Dec. 7, 1941.