Here is a picture of the TR-B:

 

     I have flown the TR3-B.  It exists.  Below is the Ed Fouche disclosure in 1998:

 

 

 

2008 Paris, France:

 

 

     While the Government has never officially announced the TR3-B it hasn't kept it secret.  These pictures are off the Internet and are unclassified.

 

 

 

Added Bonus!