Thunder Birds.

Steve Britt (Preston Foster), a former World War I flying ace, arrives at Thunderbird Field, looking for a job as a civilian primary flight instructor. His former girlfriend, Kay Saunders (Gene Tierney), lives nearby with her grandfather, retired Colonel Cyrus "Gramps" Saunders (George Barbier), also a close friend of Steve's. Steve is introduced to the new class of RAF cadets, including Peter Stackhouse (John Sutton), whose father Steve knew. Peter leaves his hospital service to enlist in the RAF to learn to fly.