Tuesday’s release of video surveillance footage showing an armed, masked person at Nancy Guthrie’s doorstep on the night she was abducted has raised a host of questions about why it took so long to publicly release, how it was retrieved and what it means for privacy. The process involved days of searching, the FBI said, after law enforcement initially believed the footage was lost because the camera was disconnected and Guthrie didn’t have a subscription to the camera company. The surprising