Whether gripping a ledge or holding fast to her mental resolve , it 's her determination that sets this rock climbing prodigy apart from other athletes .
Where others give up and let go , Sierra Blair - Coyle digs in and holds on tight .
Whether gripping a ledge or holding fast to Sierra Blair 's mental resolve , it 's her determination that sets this rock climbing prodigy apart from other athletes .
Where others give up and let go , Sierra Blair - Coyle digs in and holds on tight .