The Museum of Forest Service History expected to add a new piece to its exhibit on Wednesday, but rainy weather in Missoula delayed the transfer of a T-12 aircraft.
Neptune Aviation is donating the aerial firefighting plane to the museum.
Crews are removing fences and making sure roads and bridges can handle the weight of the 49,500=pound plane.
Once the ground dries, crews will move the plane to its new home.
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