According to a reddit post the sighting might actually have been due to a fully legal RC field in the area.
https://pay.reddit.com/r/Multicopter/comments/3dqoyh/multico...
https://pay.reddit.com/r/Multicopter/comments/3dqoyh/multico...
Emergency areas are cleared for emergency flights only and their airspace is restricted, even news copters cannot go into that space and many of them were fined and even licenses were revoked when they violated the restrictions.