Montana ANG F-16B 'Fighting Falcon' on display at the ND Centennial Air Show at the old Hector Airport terminal, Saturday 8/19/1989.

The F-16B, a two-seat model, has tandem cockpits that are about the same size as the one in the A model. Its bubble canopy extends to cover the second cockpit. To make room for the second cockpit, the forward fuselage fuel tank and avionics growth space were reduced. During training, the forward cockpit is used by a student pilot with an instructor pilot in the rear cockpit. -fas.org

It is armed with a 20mm internal M61A1 Vulcan 6-barrel Gatling cannon (511 rounds) in the left wing root. Early aircraft had four vents, while later aircraft had two. The M61 Vulcan is a hydraulically or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm rounds at an extremely high rate (typically 6,000 rounds per minute). The M61 and its derivatives have been the principal cannon armament of United States military fixed-wing aircraft for fifty years. -wiki