UFOs over Washington, DC

July, 1952; On two separate nights, National Airport and Andrews Air Force base radars detected the same UFOs
5-7 radar returns, moving 100-130 mph
F-94 fighters with radar were dispatched to investigate
On one occasion, an F-94 pilot reported being surround by lights
Menzel claimed these too were "temperature inversions"

UFOlogy in the 20th Century