In post #34 one can see clearly the letter O. It starts at the top and finishes at the top with the faint pen tail line ending inside the O.
QNE might be the first set of letters. I googled it and it is an aviation term.
Your points are well taken. I still see that first letter as a P, though. To me it reads:
Prs > BB > D-- (could be DNI - Director National Intelligence?)
I think what looks like the tail of a Q is where Biden first put the pen to draw the underline. He pulled the pen down to the right and then across.
But who knows. It's really almost a guessing game without better imaging software.