C-121 Constellation MATS Government Aircraft including North Korea where it

including North Korea where it was used extensively against United Nations forces

Promising lower noise levels and greater fuel economy than the Model 25

Armed with various combinations of 20mm cannon

but short vertical winglets

which was later redesignated as the XT-37 (later T-37 Tweet)

C-121 Constellation MATS Government Aircraft including North Korea where itUSAF C 121 Constellation airplane model. The Lockheed Constellation, affectionately known as the Connie, was a four engine propeller driven airliner built by Lockheed between 1943 and 1958 at its Burbank, California, USA, facility. A total of 856 aircraft were produced in four models, all distinguished by a distinctive triple tail design and graceful, dolphin shaped fuselage. It was used as both a civilian airliner and U. S. military air transport