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National UFO Reporting Center Sighting Report
Occurred : 2/10/1998 20:00 (Entered as : 02/10/98 20:00)
Reported: 2/13/1998 11:12
Posted: 1/28/1999
Location: Three Points (Kitt Peak Observatory), AZ
Shape: Unknown
Duration: ~8-10 minutes
Characteristics: There were lights on the object, There were aircraft in the vicinity or aircraft chasing the object
Pulsing light to north of Kitt Peak.

no actual object seen, just exhaust(?) flare. at almost exactly 20.00 hours travelling west on state rte 86 fro tucson towards ajo, arizona. looking straight at kitt peak in low angle full moon light, all three occupants of the vehicle saw a light just to the north (and possibly to the west of kitt peak) pulse four or five times with a space of perhaps two to three seconds between pulses. light was yellow to orange, the shape of the light was NOT like a jet exhaust (needle shape), but rather a spherical light. after the initial pulses, the light disappeared for perhaps eight to ten minutes. it was then seen again by all three people, much higher and farther from kitt the north. the light pulsed another two times, then was not seen again. sci fi writers have postulated a vacuum craft also designed for atmospheric flight. a pulsating propulsion system would both save fuel and keep atmospheric speed down, perhaps for greater stability. we believe that this is what we saw.