No information is currently available on the unnamed female astronaut. She has only appeared in Ace Combat 7: Skies Unknown promotional trailers.
In the game's initial announcement trailer, she is seen overlooking the area around the International Space Elevator while a battle rages on. As an Arsenal Bird deploys its drones, she proceeds to jump off the platform she was standing on. While she begins to fall, drones come close to hitting her. In the closing shots of the trailer, her helmet can be seen flying freely through the air, implying that she was hit.