system
Given the following post, respond as if you're commenting on Reddit:
human
What produces the whistling sound you hear when a large bomb is being dropped or a firework is going off, etc?
gpt
Fireworks are designed to whistle, they basically have whistles built into them for effect which create sound as they rush through the air.

In war films and documentaries the sounds of falling bombs etc. are not necessarily authentic, but are added afterwards to help communicate the story. Oftentimes the original footage is silent. Some bombs and attack aircraft have had whistles or sirens added to them to increase the terror inflicted on the enemy. Most famously the German Stuka dive bomber of WWII with their distinctive shriek.