Roger
That is so cool. I don't think I've ever seen a flying squirrel before.
Did some research on flying squirrels in NC and it looks like yours could be the endangered Carolina Northern Flying squirrel.
Billy Bob
Native Flying Squirrels
While rarely seen because they are nocturnal, flying squirrels are common throughout North Carolina. They don't actually fly like birds; instead, they use a specialized membrane of skin called a patagium to glide from tree to tree.
Southern Flying Squirrel:
This is the most common squirrel in the state and can be found in every county. They are small, roughly the size of a chipmunk, and typically live in hardwood or mixed forests.
Carolina Northern Flying Squirrel:
A much rarer and larger subspecies found only in high-elevation mountain ranges (usually above 4,500 feet) in Western North Carolina. It is federally and state-listed as endangered.