On 17 March 1950, the
This incident is Case 97 in Isaac Koi's "Top 100" article, since it was referred to in 28 of the books covered by that article.
Isaac Koi’s “ICES” Rating for this sighting = 5,390 (out of a potential score of 14*14*14*14 i.e. 38,416)
(1) “Impact” Rating of 11 (out of a potential score of 14), because it is Case 97 in Isaac Koi's "Top 100" article.
(2) “Credibility” Rating of 14 (out of a potential score of 14) because something clearly was seen by multiple witnesses. The debate regarding this incident has centered on what (if any) mundane explanation is available for these sightings.
(2) “Expert” Rating of 7 (out of a potential score of 14). It is given this neutral rating because (at the time of writing) it has not been included in any of the short lists of the best cases produced by various UFO researchers that have been compiled by Isaac Koi (see the “Best UFO Cases" article at PART 3: Existing lists by various individuals), but also is not commonly given by UFO researchers as an example of an incident that can be explained by hoax, misperception or other mundane cause.
(4)“Strangeness” Rating of 5 (out of a potential score of 14). The sighting has a relatively low strangeness rating since several researchers have put forward plausible mundane explanations for the sightings.
Sections below:

"Impact" Rating = 11
"Credibility" Rating = 14
"Expert" Rating = 7
"Strangeness" Rating = 5