The Proximity Alarm is a defensive gadget in Tom Clancy's Rainbow Six Siege, and its alert tone became familiar to players through regular match play and clipped highlights. Because the sound clearly signals detection and danger, creators started using it outside pure gameplay too, especially in short edits that need an immediate warning cue. It remains popular because even people who do not main Siege can understand the meaning from the sharp alarm alone, much like a danger alarm sound effect meme in general.