Mirroring in Episode 3

PMT = Dont ask

I'm not entirely sure, but based on the trailer when Bail Organa screams "No!" I have heard that it is because he is witnessing a young Jedi getting cut down. If it is true then it has similarities to when Luke witnessed Obi Wan getting killed by Vader.

ok!!! thanks BILB!!!

This scene reminds me of when Darth Vader suprises Luke in the corridor on Cloud City which leads to the familiar catwalk. If anyone has a GIF of that ESB sequence for comparison it sure would be nice.