dark colored craft chasing a jet at fast speed with a blue sky background

During the escort for the marine returning home from Afghanistan is when this instance happened. I do not own the rights to the video, the guy who took the video is Robert McElheny. I did try to get into contact with him but haven’t heard anything. When I returned home from the escort, I reviewed all footage of the event on Facebook and that is when I found this particular video in Logansport, IN. The craft is dark colored against a blue-sky background. The video is 28 seconds in length. Three jets pass through the frame, and directly behind the third jet at 24 seconds a small object estimated 4-6 feet in length traveling very fast, or faster than the jet is seen to be chasing the jet.