Don't know about its size, but the lack of curvature suggests the missile was traveling more or less directly away from the camera. If you knew the camera location you should have an approximate range of trajectories (+/- maybe 10%, would still cover a lot of territory)
Recall this use of the FEED meme (feeding the eye).
Indeed. There is more to be learned about Little St James Island.
7th floor of the State Dept. was a joint operation center of FBI + State planners/colluders. Where the heavy decisions got made.