The whistle is associated with multiple launch rocket systems, whose rockets and artillery shells produce a distinctive whistling as they travel through the air. Clips from combat footage and military recordings helped popularise this type of incoming sound online, where short extracts were reused as standalone effects. Because the clip is under a second long, editors adopted it as a clean, reusable cue that needs no trimming. It is now widely used in gaming videos, military edits and meme formats to signal an approaching projectile.