Deadly AC-130 Gunship in Action Firing All Its Cannons

The AC-130 is the world's biggest flying artillery gunship - nicknamed 'Hell in the Sky.' With three side-firing weapons, a 25mm Gatling gun, a 40mm Bofors cannon, and a 105mm howitzer, it's easy to see why it got its name. (03:07)

History Smithsonian Channel