Investigators are examining footage from a small camera which was attached to Michael Schumacher's helmet France's BFM TV channel reported, after his family handed the camera over.
Investigators also interviewed his son, who said he was with Schumacher at the time of the accident.
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Brad Treat, 38, was killed on a trail in the Halfmoon Lakes area of the Flathead National Forest, just outside Glacier National Park.
Appeal judges are to decide on Thursday whether a woman can use the frozen eggs of her dead daughter to give birth to her grandchild.
The £70 million F-35B jet arrived at RAF Fairford in Gloucestershire, two years after engine trouble postponed its first scheduled visit.