Analyst Notes: Node_Spectroset 6-A // Classified Internal Report Matching signature found in archive recording: 2007 Atlantic Dive - classified as marine background anomaly. Spectrogram match with Doyle's dashcam clip = 93.4%. This suggests the sound was not new. It was *remembered.* Marginalia scrawled on the corner of the report reads: > "We've heard this before. We just didn't survive it last time."
