An aviation tracking map of DC, showing a helicopter flying a tight grid pattern. https://cdn.masto.host/federatesocial/media_attachments/files/113/590/119/115/331/901/original/d2777995e44b0e83.png
DC nerditry: An NNSA survey helicopter (N2415) is doing a low, street by street pattern over DC. This is for a radiological survey to collect baseline data ahead of January’s inauguration. Good time to bring your isotopes up to the roof.