Season 8 Episode 801 | 59m 35s
In 1943, as World War II raged in Europe and the Pacific, thousands of men and women from across the United States began arriving in a remote part of south-central Washington state. They knew very little about why the U.S. government had hired them — only that it was an important project to support the war effort. It was a project that would change the world forever.
Aired: 09/16/13Video has closed captioning.