PreFlight

***********@***oo.com" data-headline="<p>Boeing-Leonardo MH-139 proposed to fulfill the U.S. Air Force requirement to replace the UH-1N. Photograph at the Leonardo Helicopters Manufacturing Facility in Philadelphia, PA.</p>" data-description="Boeing-Leonardo MH-139 proposed to fulfill the U.S. Air Force requirement to replace the UH-1N. Photograph at the Leonardo Helicopters Manufacturing Facility in Philadelphia, PA." />

Boeing-Leonardo MH-139 proposed to fulfill the U.S. Air Force requirement to replace the UH-1N. Photograph at the Leonardo Helicopters Manufacturing Facility in Philadelphia, PA.