Source of the images: https://imgur.com/a/4chan-whistleblower-NXjWQaN Original archived 4chan thread: https://archive.4plebs.org/x/thread/34629564/ Later edits: Follow-up archived 4chan thread: https://archive.4plebs.org/x/thread/34704869/ Searchable PDF with both 4chan threads Scientific American article on Ghost Murmur describes it as a futuristic CIA tool that could detect a heartbeat from vast distances.