The Northrop P-61 Black Widow is a twin-engine United States Army Air Forces fighter aircraft of World War II. It was the first operational U.S. warplane designed as a night fighter.
The P-61 radar operator occupied a separate compartment in the rear of the fuselage accessed from a hatch below.
The YP-61 pre-production prototype.
The P-61's upper turret is visible on the fuselage between the wings.
The HS.404 is an autocannon originally designed by and produced by the Swiss arm of the Spanish/Swiss company Hispano-Suiza in the mid-1930s. Production was later moved to the French arm of Hispano-Suiza.
HS.404 in the TCM-20 twin anti-aircraft configuration, displayed at the Israeli Air Force Museum
20 mm Hispano-Suiza Mk V on display at the Imperial War Museum Duxford
Israeli anti-aircraft M3 Half-track with twin H.S. 404 auto-cannons
US Patent drawing of the Hispano Suiza cannon