it might technically be true that many people wore black ties and loafers
but can you prove it
maybe its just a similar tie and loafers
but i have proof of a connection to him/them
sure, he sounds like a viable suspect but you have a ways to go to put him on the plane.
The pieces you have are supportive but not conclusive..
Where was he the night of NORJAK.. that would eliminate him.
if he was local why didn't anyone recognize him?
Of course, the FBI can get answers to questions that we can't...