On January 7, 1948, residents at Maysville, Owensboro and Irvington had reported a UFO moving at a erratic pace. Numerous witnesses including a base commander seen it.
Discriptions of the object was that it was white and looked like an upside down ice-cream cone. Four F-51s, were sent to investigate it, one of them was Captian Thomas Mantell. At 15000ft two of Mantells wingmen returned to Godman air field, there aircraft lacked oxygen.
When they reached the UFO Mantell radioed the control tower that the UFO was "metallic and tremendous in size". The two remaining wingmen dropped out they told Mantell that they were abandoning the intercept, but Mantell didn't respond, he made no further contact and continued to climb. At 3:15 his aircraft was missing, a search was launched immediately.
Just after 5:00pm the wreckage of his plane was found. The cause of the crash was later determined to be due to his lack of oxygen, which caused him to black out, and crash the plane.