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. 🎥Air Warriors | Smithsonian Channel Aviation Nation

10K views · 679 reactions | One of the most distinguishing feature of the Apache is its Integrated Helmet and Display Sighting System (IHDSS); among other abilities the pilot or the gunner can slave the helicopter's 30mm automatic M230 Chain Gun to his helmet, making the gun track head movements to point at where he looks. M230E1 can be alternatively fixed to a locked forward firing position, or controlled via the Target Acquisition and Designation System (TADS). | Defence Express | Facebook