Meaningless. Baker and Truly saw no one. They were the first to go up the building. There were undoubtedly law enforcement in the building by the time Mooney had run down to the railroad tracks, looked around, and took his elevator ride. Do you really think the fantasy assassins hung around in the building until then? What a plan. Who got to hold the "pipe-like" object out the 6th floor window and yell "bang"! Larry, Moe or Curly?
SENATOR COOPER - Did you see anyone?
Mr. BAKER - No, sir.
SENATOR COOPER - When you looked?
Mr. BAKER - Not from the second floor on up.
Utter BS.
Baker and Truly saw no one. They were the first to go up the building.By this reasoning there can't have been anybody on the 6th floor, because, just like Truly and Baker, Bonnie Ray Williams (who was up there a lot longer than the others) didn't see or hear anybody. Just how much of an idiot must you be to not understand that not being seen by somebody isn't the same as not being there.
There were undoubtedly law enforcement in the building by the time Mooney had run down to the railroad tracks, looked around, and took his elevator ride. Do you really think the fantasy assassins hung around in the building until then? A far better question is do you really think that somebody hiding on the 6th floor, who doesn't want to be noticed, would not wait until more people were on the floor, rather than letting themselves be seen by Baker and Truly. What an idiot! All he or they needed to do to hang around on the 6th floor is pretend to be searching, just like all the others were.