Modern/Historical AU. Adora and Catra grew up in the same orphanage. But when Adora matriculated and left Catra behind to pursue her dreams, Catra was left embittered and alone. Catra vowed to never have to rely on anyone ever again, racing a mile a minute to make a name for herself. But when they both wound up assigned to fly with each other in the Soviet Air Force, her resolve is immediately tested. Flying was her first, best destiny. But maybe it's better to have a wingmate.