When Casey gets put into the isolation box for the first time, she is wearing an orange POW poncho. A close up of her inside the box, however, clearly shows the outline of her unit patch on the shoulder of her flight suit. When she is taken out, she is still wearing the poncho. Only during the second time she is put into the box is she wearing her flight suit.
The Helicopter used keeps changing between the UH-1 "Huey" and the shorter UH-1A version at different times in the film.