Conductors Boeing and Leonardo Helicopters began producing the first series MH-139A grey Wolf helicopters for the US Air Force. This is the consequence of an order worth $285 million, which includes the transportation of 13 payers, method support and support services and training. A full of US Air Force Global Strike is planned Command 84 helicopters and the cost of the full UH-1N age replacement program remembering the Vietnam War is almost $3 billion.