While we were investigating the sighting we talked to several electronics specialists about our radar visual sightings. One of the most frequent comments ' we heard was, "Why do all of these radar visual sightings occur at night?" The answer was simple: they don't. On August 1, just before dawn, an ADC radar station outside of Yaak, Montana, on the extreme northern border of the United States, picked up a UFO. The report was very similar to the sighting at Brookley except it happened in the daylight and, instead of seeing a light, the crew at the radar station saw a "dark, cigar shaped object" right where the radar had the UFO pinpointed.What these people saw is a mystery to this day.
Capt. Edward J. Ruppelt
The Report on Unidentified Flying Objects by Edward J. Ruppelt, page 194