I have been searching for a particular UFO case, which involved my high school history teacher, and host-parent of my good high-school-foreign-exchange-student Emmanuel Charrier. All the time I spent around this man, I never knew he was involved in a well documented UFO case--I wish I had been able to talk with him about it. He and his wife have since died.
While browsing a UFO bargain book at B&N about 12 years ago, I came across a case involving military (air force, I assume) subjects in a jet. The gist of it was that an unidentified object (and closely observed, as I remember) was persuing the jet. One of the witnesses' names (my aquaintance) was Walter (or Walt) Teuscher. Because of the unique name, age/timeframe, military connection (I know he was in the military) I am certain the witness and my teacher are the same person.
I am almost positive the case was one of Hynek's, and that it took place in or around the 1950's. I may be off on the spelling of Teuscher's last name--strangely, I recall it being spelled 'Teuscherer' but that doesn't seem to be a valid spelling at all. I will be digging out my dusty yearbook and trying to find the correct spelling--I will update. I have not been able to find this case listed in any of the online or printed resources. I'm so mad I didn't purchase the the book or at least document the case. Any information would be greatly appreciated.