Basic Reporting Data, 3-4. In addition, “THE B-52 AIRCRAFT, OPERATING IN THE LOCAL AREA, REPORTED A HEAVY HAZE CONDITION AT FL200 DOWN TO 10,000 FEET” (4). Later, during the time of the B-52 air-radar encounter, Werlich notes, “WHATEVER CAUSED THE ECHO WAS NOT VISUALLY SIGHTED BY THE AIRCRAFT CREW MEMBERS NOR WAS IT SEEN BY THE TOWER OPERATOR WHO WAS FOLLOWING THE AIRCRAFT PROGRESS THROUGH BINOCULARS. DUE TO HEAVY HAZE AND SEVERAL CLOUD LAYERS, THE AIRCRAFT WAS NOT VISIBLE THROUGHOUT THE APPROACH” (7).