Long before the Vietnam conflict had ended, the “Huey” (its original Army designation was HU-1A, for Helicopter, Utility, Model 1A) was probably the most recognizable helicopter in the world ...

The Army proposed to mount a 105 mm artillery gun on the chassis of a UH-1 Iroquois Huey helicopter. The engineers wanted to take the body of the iconic Huey helicopter and remove the nose.