Masters of the Air is a good choice for confident learners looking for more realistic and demanding listening practice. Most of the language stays fairly accessible, so learners can spend more energy following the scene than decoding difficult words. The complexity of the plot makes listening more challenging because learners also need to keep track of what is happening. At an average of around 105 words per minute, the dialogue is generally manageable, though some exchanges require more attention. It should work best near B2/C1, especially for learners prepared to handle a more complex story.