EVB2933242: The only German attempt at World War II sabotage on the US mainland was a dismal failure. Eight saboteurs disembarked from a submarine with explosives and cash in June 1942. One of them, George Dasch (2nd from Lower right), contacted the FBI, leading to the arrest of all the others within two weeks. Dasch and Burger (lower right) were sent to prison, while / Bridgeman Images
EVB2936196: Power station towers and cables at the Hoover Dam, Arizona and Nevada was the world's largest electric-power generating station when it was completed in 1936. It provided energy to the American southwest but cut river flow to the Colorado River Delta in Mexico. 1941 photo / Bridgeman Images