By this time all the witnesses were greatly excited by the UFO. The master sergeant couldn’t decide what to do next because he kept thinking, “They’re bigger than all of us!” but the traffic controller notified the F-84 patrolling in the west and asked for an intercept. The pilot soon found the light, which was still stationary. He began the chase, but when he had approached to within an estimated three miles, the light rapidly began to retreat. He continued the chase directly north for 120 miles (during which both the jet and the UFO went off the ground scope) but he could not gain on the object. Running short of fuel, he turned back toward the base. The ground scope soon picked him up again and, a few seconds later, picked up an unknown target apparently trailing the jet by ten or fifteen miles. A second jet then took to the air, located the light, and began the pursuit. Like the first pilot, he could not close the distance between him and the receding UFO. After performing various tests to convince himself that he wasn’t chasing a reflection, he finally turned on his radar gun camera. After a few seconds the red light blinked on, indicating a solid object ahead. The pilot thereupon asked permission to break off the intercept and, having taken a photograph, returned to base. As before, the ground scope picked up the returning jet but this time the UFO did not reappear on the scope. The controller then called officials at the filter center at Fargo, North Dakota. They had not received any UFO reports; a few minutes later, however, they called back to say that spotter posts between the two cities, on a southwest-northeast line, had indeed seen a bluish-white light. Investigators from ATIC arrived promptly but they were not able to explain the sighting. Even the photographs showed nothing useful. Conclusion: unknown. The incident remained unexplained chiefly because the investigators, like the witnesses, apparently assumed that a single unidentified flying object accounted for all the phenomena observed that evening. Although the available evidence is somewhat confusing, a careful study shows that, on the contrary, the visual and the radar targets could not have been the same. When the ground spotter first reported the UFO, she described it as a stationary light low on the horizon. The radarscope, however, showed a target that was moving slowly, at an altitude of about 16,000 feet. Some minutes later, when the visual target did begin to move, the radar target speeded up. This was the only instance in which the movements of the two seemed to be roughly parallel. But in the excitement that followed, all the witnesses assumed that the two targets were identical. The published account[VIII-3, p. 303 ff.] does not distinguish clearly between the actions of the light and the movements of the blips on the radarscope.