Bell UH-1N-BF Iroquois, 40th Helicopter Squadron, left rear

This rear quarter view of a U.S. Air Force UH-1N of the 40th Helicopter Squadron, flying across Montana, shows the two exhaust ducts of the PT6T Twin Pac. (U.S. Air Force)

40th Helicopter Squadron flight crews fly a UH-1N Huey Iroquois over Montana’s landscape. (Courtesy Photo)

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