Rather than coming from one identifiable scene, this combination is a staple of online video editing, where creators layer recognisable vehicle sounds to heighten drama without dialogue. Helicopter rotors and police sirens are both instantly understood, so pairing them signals urgency, authority and movement in seconds. It appears in short-form edits, gaming clips and meme videos, where the familiar sounds do the storytelling and let a simple entrance or chase feel larger than it looks on screen.