Double bill of classic comedy featuring Lou Abbott & Bud Costello. ' Keep ' Em Flying' (1941) sees the pair as Blackie & Heathcliff, assistants to Jinx Roberts, (Dick Foran) a stunt flier in an air circus. In keeping with the theme of the time, Jinx decides its time he joined the air corps & served his country, followed closely by his trusty assistants. Jinx has fallen in love with the waitress at a club on his last night out & she ends up serving at the USO at the base Jinx is assigned. Heathcliff & Lou, meantime, have fallen for a pair of twin hostesses played by Martha Raye. In ' Ride ' Em Cowboy' (1942), Willoughby (Lou Costello) & Duke (Bud Abbott)