Radar warning receivers are standard cockpit equipment on military fighter jets such as the F-14 and F/A-18, warning pilots when enemy radar has detected or locked onto their aircraft. The distinctive electronic beeping has become familiar to a wider audience through flight simulation games, aviation documentaries and cockpit footage shared online. Because the tone is instantly recognised as a danger signal, even by people who have never flown, it is widely reused in edits, gaming videos and memes to signal trouble, an incoming threat or a moment that is about to go wrong.