A gripping new one-hour special from Smithsonian Channel relives the fateful day 70 years ago when the United States dropped a single bomb on Japan, destroying the city of Hiroshima and killing up to 70,000 people instantly. Narrated by Golden Globe nominee Dominic West (The Affair), THE DAY THE BOMB DROPPED premieres on Sunday, August 2 at 9 p.m. ET/PT on Smithsonian Channel.